Unlike red blood cells, white blood cells can live for many years.
I believe the Answer is temperature. Good luck!
Might be b I might be wrong
The DNA content analysis allows the cells to differentiate in G0/G1, S phase, and G2/M, as well as exhibits a emission signal proportional to the amount of DNA.
https://www.creative-bioarray.com/dna-content-analysis.htm
Endocytosis enables extensive particles to enter the cell, and exocytosis ousts vast atoms from the cell. Along these lines, the cell can acquire things it needs and disposes of things it doesn't. Exocytosis is the turn around process, where a cell ousts substantial particles, generally squander from cell forms.