This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Which of the following is not antibody dependent methods 
Select and explain. 
A. ELISA, B. Chromatin Immunoprecipitation assay, C. Flow cytometry, D. SDS - PAGE
D: SDS - PAGE
Answer: D: SDS - PAGE 
Explanation: Antibody dependent methods are:

EUSA
Protein Immunoprecipitation (ChIP assay)
Immunoelectrophoresis
Western blot
Protein Immunostaining
Flow cytometry.

Note: SDS PAGE is a method of separating proteins based on size.