Need some help here
what is the blood cell which engulfs and digests bacteria.

Macrophages are monocytes that are present in nearly all tissue. They digest cells and pathogens by engulfing them in a process called phagocytosis. Once ingested, lysosomes within the macrophages release hydrolytic enzymes that destroy the pathogen.

Explanation:

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

the actual answer was 160934