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: Pediatrics
In Glanzman's thrombasthenia, there is a defect of 
Select and explain. 
A. Gp IIb / IIa, B. Gp IIb / IIIa, C. Gp Ib / IX, D. Gp IIb / IX
B: Gp IIb / IIIa
Answer: B: Gp IIb / IIIa 
Explanation: Glanzman's thrombasthenia

Platelet aggregation defect
IIb / IIIa Gp deficient