Albuminous cells function through a series of well-coordinated steps that involve protein synthesis, processing, and secretion. First, the DNA in the cell nucleus is transcribed into mRNA, which is then translated into protein on the ribosomes of the rough endoplasmic reticulum. The nascent protein enters the lumen of the ER, where it undergoes initial folding and modification. It is then transported to the Golgi apparatus for further processing, such as glycosylation and packaging into secretory vesicles. Finally, these vesicles fuse with the plasma membrane to release the protein into the extracellular space or into the bloodstream.
