Sharks

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Shark Cartilage Shark cartilage has been investigated as treatments for cancer, psoriasis, arthritis, and a number of other medical conditions for more than 30 years. At least some of the interest in cartilage as a treatment for cancer arose from the mistaken belief that sharks, whose skeletons are made primarily of cartilage, are not affected by this disease. Although reports of malignant tumours in sharks are rare, a variety of cancers have been detected in these animals. Nonetheless, several substances that have anti-tumour activity have been identified in cartilage. The major structural components of cartilage include several types of the protein collagen and several types of glycosaminoglycans, which are polysaccharides. Chondroitin sulphate is the major glycosaminoglycan in cartilage. Although there is no evidence that the collagens in cartilage, or their breakdown products, can inhibit angiogenesis, there is evidence that shark cartilage contains at least one angiogenesis inhibi...

Shark Dissection Jeffrey B. Graham, Physiologist Marine Biology Research Division Center for Marine Biotechnology and Biomedicine. Jeffrey B. Graham is a marine biologist and physiologist at UCSD's Scripps Institution of Oceanography. Dr. Graham's research focuses on the evolution, comparative physiology and biology of fish, and he has special interests in fish locomotion, physiology, and respiratory adaptations. Born on Nov. 26, 1941, in Portsmouth, VA, he received a B.A. in zoology in 1964, and an M.S. in biology in 1967, both from San Diego State University. He received a Ph.D. from the University of California, San Diego, in 1970. Dr. Graham served on the scientific staff of the Smithsonian Institution and was a professor of zoology at San Diego State University prior to joining Scripps Institution. He is a member of the American Association for the Advancement of Science, Sigma Xi, and the American Physiological Society, and has published more than 120 scientific papers. D...

Where do sharks live Sharks live in every ocean of the world – from the Arctic to the Antarctic. They are also seen in some rivers and lakes. Worldwide, there are approximately 368 species of sharks and at least 12 of them are found in the waters of British Columbia. Pictures of Sharks