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Viperid venoms , on the other hand , contain an abundance of protein-degrading enzymes called proteases , which produce the symptoms like those encountered by the unlucky rattlesnake handler : strong local swelling and necrosis , and blood loss from cardiovascular damage complicated by coagulopathy , or disruption of the blood clotting system . Started in the summer of 2002 with one San Francisco area school and several California Academy of Sciences high school interns , the project is now working with six classes of students at five schools around the Bay Area . A snake handler at a small roadside zoo in Arizona is momentarily distracted as he handles a large western diamondback rattlesnake . Dr. Baptista brought all of his interests to bear in a unique style of research that broke new ground in the scientific study of song learning . To Apply : Please send a statement of interest in working at the Academy , complete the application form and select an advisor and project from the Summer Systematics Institute 2003 section , two letters of recommendation at least one must be from a science professor , and one set of official transcripts . Much later , as a college student , I took summer jobs in Alaska and became enthralled by the ethereal landscapes of the Arctic as a place to do research . \ 14 While the data from Education were audited , Education 's independent accountant disclaimed an opinion due to the unreliability of FFEL Program student loan data . Using keys requires the learning of some terms . But as with that unlucky snake handler in Arizona or crazy museum curators , the fact is that many bites in this country occur to people who pick snakes up .