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: Pathology
Working Formulation" in staging of NHL is based on - 
Select and explain. 
A. Survival characteristics of cells, B. Morphology of cells, C. Cells of origin, D. None of the above
B: Morphology of cells
Answer: B: Morphology of cells 
Explanation: Ans. is 'b' i.e., Morphology of cellso Grading of NHL by working formulation is based on the morphology of the cells (small or large, cleaved or uncleaved) and on growth pattern (follicular or diffuse).