In this task, you are given a paragraph, and your job is to generate comma-separated entities present in the given paragraph. Generate entities from a given passage in such a way that (i) they are present in the paragraph, (ii) they are non-duplicate, (iii) they underwent a state change during the process. Avoid creating entities that (i) aren't present in the process paragraph and (ii) aren't significant. 

Over 99% of the exocrine pancreas cells produce digestive juices. They secrete digestive juice "externally" into the small intestine. There are enzymes for breaking down fats, proteins , and carbohydrates. Digestive juices flows from the pancreas through an excretory duct into the small intestine. When the blood sugar levels rise, as they might after a meal, insulin is released. When blood sugar levels are too low, the pancreas releases glucagon into the bloodstream. 
digestive juices; digestive juice ,insulin ,glucagon 