The process in which the developmental fate of a cell becomes restricted such that it will develop into a compound eye photoreceptor cell. A photoreceptor cell is a cell that responds to incident electromagnetic radiation. Different classes of photoreceptor have different spectral sensitivities and express different photosensitive pigments.

The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.

The hydrolysis of a peptide bond or bonds within a ligand for the epidermal growth factor receptor, as part of protein maturation, the process leading to the attainment of the full functional capacity of a protein. In Drosophila for example, in the Golgi apparatus of the signal producing cell, Spitz is cleaved within its transmembrane domain to release a functional soluble extracellular fragment.

The hydrolysis of a peptide bond or bonds within a ligand for the epidermal growth factor receptor, as part of protein maturation, the process leading to the attainment of the full functional capacity of a protein. In Drosophila for example, in the Golgi apparatus of the signal producing cell, Spitz is cleaved within its transmembrane domain to release a functional soluble extracellular fragment.

A cell cycle process that results in the division of the cytoplasm of a cell after mitosis, resulting in the separation of the original cell into two daughter cells.

The process in which a relatively unspecialized cell acquires the specialized features of an oenocyte. Oenocytes are large secretory cells found in clusters underlying the epidermis of larval abdominal segments.

The process in which a relatively unspecialized cell acquires the specialized features of an oenocyte. Oenocytes are large secretory cells found in clusters underlying the epidermis of larval abdominal segments.

The process during Drosophila embryogenesis whereby the ectodermal cells of the lateral epithelium stretch in a coordinated fashion to internalize the amnioserosa cells and close the embryo dorsally.

De novo generation of a long process of a neuron, including the terminal branched region. Refers to the morphogenesis or creation of shape or form of the developing axon, which carries efferent (outgoing) action potentials from the cell body towards target cells.

The process whose specific outcome is the progression of the brain over time, from its formation to the mature structure. Brain development begins with patterning events in the neural tube and ends with the mature structure that is the center of thought and emotion. The brain is responsible for the coordination and control of bodily activities and the interpretation of information from the senses (sight, hearing, smell, etc.).

The process, occurring in the larva, by which the anatomical structures of the salivary gland are generated and organized.

The process whose specific outcome is the progression of the oenocyte over time, from its formation to the mature structure. The oenocytes are large secretory cells found in clusters underlying the epidermis of larval abdominal segments.

The process whose specific outcome is the progression of the oenocyte over time, from its formation to the mature structure. The oenocytes are large secretory cells found in clusters underlying the epidermis of larval abdominal segments.

The regionalization process in which the area of a imaginal disc-derived wing that will form a wing vein is specified.

The process in which the anatomical structures of the imaginal disc-derived wing are generated and organized. The wing is an appendage modified for flying.

The establishment, maintenance and elaboration of the proximal/distal axis of the leg imaginal disc, a precursor to the adult leg.

The process in which anatomical structures of the veins on an imaginal disc-derived wing are generated and organized.

Any process that increases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.

Any process that decreases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.

Ensuring that tracheal tubes in an open tracheal system maintain their epithelial structure during the cell shape changes and movements that occur during the branching process.

Formation of the tracheal pits, the first tube-like structures to form in the open tracheal system. Once cells are determined to their tracheal cell fate, the tracheal pits arise by invagination of each ectodermal cluster of tracheal placode cells, between 5 and 7 hours after egg laying. An example of this is found in Drosophila melanogaster.

Allocation of embryonic cells to the genital imaginal disc founder populations. Early in development at the blastoderm stage, the anlage of the genital disc of both sexes consists of three primordia: the female genital primoridum lcoated anteriorly, the anal primoridum located posteriorly, and the male gential primordium between the two.

The process in which a cell in the larval wing imaginal disc becomes capable of differentiating autonomously into a wing cell, if left in its normal environment.

Any process leading to the attainment of the full functional capacity of a ligand for an epidermal growth factor receptor. The ligand is functional when it can bind to and activate an epidermal growth factor receptor.

Any process leading to the attainment of the full functional capacity of a ligand for an epidermal growth factor receptor. The ligand is functional when it can bind to and activate an epidermal growth factor receptor.

The hydrolysis of a peptide bond or bonds within a ligand for the epidermal growth factor receptor, as part of protein maturation, the process leading to the attainment of the full functional capacity of a protein. In Drosophila for example, in the Golgi apparatus of the signal producing cell, Spitz is cleaved within its transmembrane domain to release a functional soluble extracellular fragment.

Any process that modulates the frequency, rate or extent of epidermal growth factor receptor signaling pathway activity.

Any process that activates or increases the frequency, rate or extent of addition of phosphate groups to a molecule.

The process in which a cell becomes capable of differentiating autonomously into a photoreceptor cell regardless of its environment; upon determination, the cell fate cannot be reversed.

Any process that results in a change in the behavior of an organism as a result of an ethanol stimulus.

The process in which the developmental fate of a cell becomes restricted such that it will develop into a stem cell.

The multiplication or reproduction of epithelial cells, resulting in the expansion of a cell population and contributing to the shaping of a Malpighian tubule.

Any process that decreases the frequency, rate or extent of the directed movement of proteins within cells.

The attachment of one cell to another cell via adhesion molecules.

The morphogenetic process in which the anatomical structures of the compound eye are generated and organized. The adult compound eye is a precise assembly of 700-800 ommatidia. Each ommatidium is composed of 20 cells, identified by cell type and position. An example of compound eye morphogenesis is found in Drosophila melanogaster.

A circulatory system process carried out by the heart. The heart is a hollow, muscular organ, which, by contracting rhythmically, keeps up the circulation of the blood. The heart is a hollow, muscular organ, which, by contracting rhythmically, keeps up the circulation of the blood.

The orderly movement of epithelial cells during development of an open tracheal system. An example of this is found in Drosophila melanogaster.

The establishment, maintenance and elaboration of the proximal/distal axis of the leg imaginal disc, a precursor to the adult leg.

The process by which an organism or tissue maintains a population of male germ-line stem cells.

The process in which the cone cells of the compound eye, the lens-secreting cells in the ommatidia, adopt pathways of differentiation that lead to the establishment of their distinct cell type.

Any process that activates or increases the frequency, rate or extent of the controlled release of a protein from a cell.

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

The component of the Golgi membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

The lipid bilayer surrounding a late endosome.

The region of a polarized cell that forms a tip or is distal to a base. For example, in a polarized epithelial cell, the apical region has an exposed surface and lies opposite to the basal lamina that separates the epithelium from other tissue.

All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.

The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.