Question

What was one thing scientists discovered from their medical studies on canine subjects that changed the field's understanding of diabetes causes and treatments?
A. Diabetes can be cured without medicine
B. The pancreas secretes insulin
C. Thyroid hormones can regulate glucose
D. The kidneys filter glucose

Answer 1

B. The pancreas secretes insulin

Experiments on dogs (e.g., pancreatectomy and pancreatic extracts by Banting, Best and colleagues) showed the pancreas produced a substance—insulin—that controls blood glucose. This changed understanding of diabetes and led to insulin therapy.