Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.

The process in which a CD4-positive, alpha-beta T cell becomes committed to becoming a T-helper cell, a CD4-positive, alpha-beta T cell specialized to promote various immunological processes.

The process in which the anatomical structures of the outflow tract are generated and organized. The outflow tract is the portion of the heart through which blood flows into the arteries.

The process in which the structure of the atrioventricular valve is generated and organized.

The developmental process pertaining to the initial formation of the mitral valve from unspecified parts. This process begins with the specific processes that contribute to the appearance of the discrete structure and ends when the structural rudiment is recognizable.

The developmental process pertaining to the initial formation of the tricuspid valve from unspecified parts. This process begins with the specific processes that contribute to the appearance of the discrete structure and ends when the structural rudiment is recognizable.

The sequential process in which the multiple coagulation factors of the blood interact, ultimately resulting in the formation of an insoluble fibrin clot; it may be divided into three stages: stage 1, the formation of intrinsic and extrinsic prothrombin converting principle; stage 2, the formation of thrombin; stage 3, the formation of stable fibrin polymers.

Any process that modulates the rate, frequency, or extent of definitive erythrocyte differentiation. Definitive erythrocyte differentiation occurs as part of the process of definitive hemopoiesis.

Any process that modulates the rate, frequency, or extent of definitive erythrocyte differentiation. Definitive erythrocyte differentiation occurs as part of the process of definitive hemopoiesis.

The process in which a myeloid precursor cell acquires specializes features of an erythrocyte.

The process in which a myeloid precursor cell acquires specializes features of a megakaryocyte.

The process in which platelets bud from long processes extended by megakaryocytes.

Any process that stops, prevents, or reduces the frequency, rate or extent of protein binding.

The stages of blood cell formation that take place within the embryo.

Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of interferon-gamma.

Any process that stops, prevents, or reduces the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of interleukin-4.

Any process that stops, prevents, or reduces the frequency, rate or extent of adipocyte differentiation.

Any process that modulates the frequency, rate or extent of megakaryocyte differentiation.

The process in which the anatomical structures of cardiac muscle tissue are generated and organized.

Any process that decreases the rate, frequency or extent of mast cell differentiation, the process in which a relatively unspecialized myeloid precursor cell acquires the specialized features of a mast cell. A mast cell is a cell that is found in almost all tissues containing numerous basophilic granules and capable of releasing large amounts of histamine and heparin upon activation.

The developmental process in which a ventricular septum is generated and organized. A ventricular septum is an anatomical structure that separates the lower chambers (ventricles) of the heart from one another.

The developmental process in which atrial septum is generated and organized. The atrial septum separates the upper chambers (the atria) of the heart from one another.

The formation and maintenance of DNA loops that juxtapose the promoter and enhancer regions of RNA polymerase II-transcribed genes and activate transcription from an RNA polymerase II promoter.

That part of the nuclear content other than the chromosomes or the nucleolus.

A protein complex that is capable of associating with DNA by direct binding, or via other DNA-binding proteins or complexes, and regulating transcription.

A protein complex that possesses activity that prevents or downregulates transcription.