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
Fibroblasts in tissue culture form interferon of type- 
Select and explain. 
A. Alpha, B. Beta, C. Gamma, D. All of the above
B: Beta
Answer: B: Beta 
Explanation: IFN beta produced by fibroblasts Reff: Anantharayan & Panikers textbook f microbiology 9th edition pg:155