Which of the Following Enzymes are NOT Secreted by TH1

Question

Which of the following enzymes are NOT secreted by TH1 to activate macrophages?
A) granulocyte-monocyte colony stimulating factor
B) interferon gamma
C) TNF-α
D) fibrin

Accepted Answer

Fibrin is not an enzyme and is not secreted by TH1 cells. It is a protein involved in blood clotting. Granulocyte-monocyte colony stimulating factor (GM-CSF), interferon gamma, and TNF-α are all cytokines secreted by TH1 cells to activate macrophages.