This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
In Marfan&;s syndrome which of the following is affected 
Select and explain. 
A. Collagen, B. Fibrillin, C. Actin, D. Fibronectin
B: Fibrillin
Answer: B: Fibrillin 
Explanation: It is a connective tissue disorder. Affects fibrillin 1 gene. Clinical features include; Visual difficulties long limbs hea problems etc Refer robbins 145