Ammonia is a compound composed of one nitrogen atom bonded to three hydrogen atoms.

Enzymes are macromolecular biological catalysts that accelerate chemical reactions.

Hypoxia-inducible factor 1-alpha, also known as HIF-1-alpha, is a subunit of a heterodimeric transcription factor hypoxia-inducible factor 1 (HIF-1) that is encoded by the HIF1A gene.

Nucleic acids are a type of biological molecule that play a critical role in the storage, transmission, and expression of genetic information.

Severe combined immunodeficiency (SCID), also known as Swiss-type agammaglobulinemia, is a rare genetic disorder characterized by the disturbed development of functional T cells and B cells caused by numerous genetic mutations that result in differing clinical presentations.