Chief cells ( stomuch) secreate pepsinogen , a inactivae enzyme. And in small intestine it converted into pepsin ,active form. Chief cell also present in parathyroid gland release pth harmone regulates level of calcium, magnesium, HPO4 ions in blood.
The dictionary definition of afternoon is simply the hours between noon and evening. In the United States, the typical workday ends at 5:00 p.m.
In addition to our regular weekly hours of 8 a.m. to 5 p.m., we will be adding Saturday hours from 9 a.m. to 4 p.m. and on Sunday from 1 p.m. to 6 p.m. We hope these business hours will accomodate your schedule. Thank you for your patronage. Example 5: Sample of New Hours of Operation. Example 1: Sample Letter for  Therapy Services, Inc. is pleased to announce new hours of operation, effective July 1. The new hours are from 10 a.m. to 7 p.m. The change, which includes a later work day, will help to accommodate after-school appointments for students.