The chemical reactions and pathways involving vitamin D2, (3S,5Z,7E,22E)-9,10-secoergosta-5,7,10(19),22-tetraen-3-ol.

Any process that activates or increases the frequency, rate or extent of neural crest cell fate specification.

Any process that increases the rate, frequency, or extent of neural crest formation. Neural crest formation is the formation of the specialized region of ectoderm between the neural ectoderm (neural plate) and non-neural ectoderm. The neural crest gives rise to the neural crest cells that migrate away from this region as neural tube formation procedes.

Regulated cleavage of the developing macronuclear genome at a limited number of chromosome breakage sites (CBS). The macronuclear destined segment (MDS) sequence adjacent to the CBS (or separated from it by a BES) receives a macronuclear telomere following chromosome breakage.

A process involved in the conversion of a primary microRNA transcript into a pre-microRNA molecule.

A process leading to the generation of a functional miRNA. Includes the cleavage of stem-loop RNA precursors into microRNAs (miRNAs). miRNAs are a class of small RNAs that primarily silence genes by blocking the translation of mRNA transcripts into protein, or by increasing the degradation of non-protein-coding RNA transcripts.

The removal of acetyl groups from histones in centromeric DNA.

The process whose specific outcome is the progression of the ventricular cardiac myofibril over time, from its formation to the mature structure. A cardiac myofibril is a myofibril specific to cardiac muscle cells.

The process whose specific outcome is the progression of the cardiac myofibril over time, from its formation to the mature structure. A cardiac myofibril is a myofibril specific to cardiac muscle cells.

The process whose specific outcome is the progression of the atrial cardiac myofibril over time, from its formation to the mature structure. A cardiac myofibril is a myofibril specific to cardiac muscle cells.

The process whose specific outcome is the progression of a striated muscle cell over time, from its formation to the mature structure. Striated muscle cells contain fibers that are divided by transverse bands into striations, and cardiac and skeletal muscle are types of striated muscle.

Any process that activates or increases the frequency, rate or extent of embryo sac central cell differentiation.

Any process that modulates the frequency, rate or extent of female gametophyte central cell differentiation.

Any process that modulates the frequency, rate or extent of embryo sac egg cell differentiation.

Any process that stops, prevents, or reduces the frequency, rate or extent of embryo sac egg cell differentiation.

Any process that activates or increases the frequency, rate or extent of embryo sac egg cell differentiation.

A protein complex that contains the epidermal growth factor receptor (EGFR), Grb2 and the guanine nucleotide exchange factor Sos (or an ortholog thereof, such as mSos1), and is involved in linking EGFR activation to the p21-Ras pathway.

The process in which the anatomical structure of cardiac atrium muscle is generated and organized.