Insulin/Talk

Thanks you for your editing and refractoring but please don't remove some important data.
Islets of Langerhans is historically a earlier term some authorities advise using "pancreatic islets" term now.
The same applies to naming convention of cells found in islets of Langerhans

• B cells produce insulin
• A cells produce glucagone and so on

Please be more cautious in your refractoring.