The chemical reactions and pathways resulting in the formation of lipids, compounds soluble in an organic solvent but not, or sparingly, in an aqueous solvent.

A cellular process that results in the biosynthesis of constituent macromolecules, assembly, and arrangement of constituent parts of a cell wall of the type found in Actinobacteria. The cell wall is the rigid or semi-rigid envelope lying outside the cell membrane. Actinobacterial cell walls contain characteristic mycolic acids, of which some are covalently linked to the cell wall peptidoglycan and others accumulate at the cell surface.

Any process in which an organism activates, maintains or increases the frequency, rate or extent of the immune response of the host organism; the immune response is any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat. The host is defined as the larger of the organisms involved in a symbiotic interaction.

The aggregation, arrangement and bonding together of a set of components, including arabinogalactan mycolate and trehalose dimycolate, to form the mycolate layer of the Actinobacterium-type cell wall. The mycolate layer is physically attached to the peptidoglycan layer.

The rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal, most prokaryotic cells and some protozoan parasites, maintaining their shape and protecting them from osmotic lysis. In plants it is made of cellulose and, often, lignin; in fungi it is composed largely of polysaccharides; in bacteria it is composed of peptidoglycan; in protozoan parasites such as Giardia species, it's made of carbohydrates and proteins.

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