In mammals, Ca2+ and HCO3- play a critical role in the regulation of sperm function, most likely by regulation of cAMP levels. sAC is active in human spermatozoa and is a sensor for both HCO3- and Ca2+.
Purdue University Main Campus tuition is $9,208 per year for in-state residents. This is 43% more expensive than the national average public four year tuition of $6,429. The cost is $9,855 and 52% cheaper than the average Indiana tuition of $19,063 for 4 year colleges. Tuition ranks 16th in Indiana amongst 4 year colleges for affordability and is the 56th most expensive 4 year college in the state. If attending from out-of-state, the tuition is $28,010 which represents a 204% premium.
Pennsylvania State University had the highest in-state tuition for a four-year public university at $15,250 during the 2010-11 school year. When the costs of room, board and other expenses are factored in, the total rises to $19,816, the fourth highest net price nationwide.