CD19, 20, 21 Are on These Cells

question 24

Multiple Choice

CD19, 20, 21 are on these cells

• A)macrophage
• B)B cells
• C)T cells
• D)dendritic cells

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Definitions:

Snout Size Reduction

A phenomenon observed in the domestication process where animals, particularly dogs, show a decrease in snout length compared to their wild ancestors.

Primates

A mammalian order that includes humans, apes, monkeys, and prosimians, characterized by large brains, forward-facing eyes, and versatile limbs.

Skull Opening

Also known as trepanation, it is an ancient surgical procedure involving the drilling or scraping of a hole into the human skull.

Paleoanthropologists

Scientists who specialize in the study of the origins and development of early humans through fossil records.