Vitamin D2 and vitamin D3 are the forms of vitamin D most important to human health, according to the Mayo Clinic. Vitamin D2 is manufactured by plants, while vitamin D3 is manufactured in the skin when it's exposed to the sun.
Population in families living in Washtenaw County ; Total Population: 238,069; Population Under 18 years: 70,878; Population 18 years and over: 167,191
Vice President, Human Resources and Labor Relations. Washtenaw Community College (WCC), founded in 1965, is a comprehensive community college located in Ann Arbor, Michigan. Each year, the College serves more than 26,000 students in credit and non-credit classes and employs more than 1,600 faculty and staff.