Which of the Following Acts as a Chemotactic Factor

Question

Which of the following acts as a chemotactic factor?
A) C5a
B) interferon β
C) leukotriene
D) MAC
E) factor P

Accepted Answer

Chemotactic factors are molecules that cause cells to move toward or away from them. Both C5a and leukotriene are examples of chemotactic factors; C5a attracts neutrophils while leukotriene attracts eosinophils and neutrophils. Interferon β is not a chemotactic factor, MAC stands for Membrane Attack Complex which has no chemotactic properties, and factor P is not a known chemotactic factor.