Why is easy bruising so common in older adults? Most bruises form when small blood vessels (capillaries) near the skin's surface are broken by the impact of a blow or injury â often on the arms or legs. When this happens, blood leaks out of the vessels and initially appears as a black-and-blue mark. Eventually your body reabsorbs the blood, and the mark disappears.
HeLa cell. HeLa cell, a cancerous cell belonging to a strain continuously cultured since its isolation in 1951 from a patient suffering from cervical carcinoma. The designation HeLa is derived from the name of the patient, Henrietta Lacks.
Haploid âA cell that has half the amount of chromosomes. A cell that is âNâ for chromosome amount Diploid âA cell that has twice the amount of chromosome. A cell that is â2Nâ for chromosome amount Gamete âthe haploid âsexâ cells (in animals they are sperm and egg cells) Somatic Cell âall diploid cells (body cells) that are not gametes