The islets of Langerhans are the parts that secrete insulin and glucagon.

His body started excessive secretion in response to stress.

This plant secretes a special liquid.

My father underwent pancreas surgery.

It's difficult to solve a part of this problem.

We went to that island during the summer vacation.

He was diagnosed with pancreatic cancer.

In French, the partitive article plays a very important role.

The greater part of the time is spent on work.

This project was partially successful.