The immune system originates with a primordial cell of the fetus
known as the _____ stem cell.
a. T
b. dendritic
c. monocyte
d. hematopoietic
18: Which one of the f
known as the _____ stem cell.
a. T
b. dendritic
c. monocyte
d. hematopoietic
18: Which one of the f