This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
The type of receptors present on T cells are: 
Select and explain. 
A. IgG, B. IgD, C. CD4, D. Prostaglandins
C: CD4
Answer: C: CD4 
Explanation: Ans. is 'c' i.e., CD4(Ref: Ananthanarayan, 9th/e, p. 133 and 8th/e, p. 128)* Markers present on T cells are CD1, CD3, CD4, CD5 and CD8.