Question

multiple choice question
leukocytes develop from hemopoietic stem cells in the bone marrow in response to hormones called ____ and ____.
o colony - stimulating factors; interleukins
o interleukins; erythropoietin
o colony - stimulating factors; erythropoietin

Explanation:

Leukocytes (white - blood cells) develop from hematopoietic stem cells in the bone marrow in response to colony - stimulating factors and interleukins. Erythropoietin is mainly involved in the production of red blood cells (erythrocytes), not leukocytes.

Answer:

A. colony - stimulating factors; interleukins