This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics
Laron dwarfism is caused by 
Select and explain. 
A. Deficiency of GH, B. GH receptor defect, C. Deficiency of thyroxin, D. Thyroxin receptor defect
B: GH receptor defect
Answer: B: GH receptor defect 
Explanation: Laron syndromeDwarfDevelopment of end-organ resistance to growth hormone(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 2640-2641)