31. Additionally prolonged use of heparin results in heparin induced thrombocytopenia. 32. Additionally prolonged use of heparin results in heparin induced thrombocytopenia. 33. Heparin -mimicking polymers can be designed to exhibit shape memory behavior.34. The German study used a low dose of heparin . 35. Biogen spokeswoman Kathryn Bloom says Hirulog demonstrated efficacy similar to that of heparin . 36. Only last month, Wyeth recalled certain forms of Heparin , an anticoagulant. 37. She was involved in the development of injectable heparins . 38. In the 1930s, several researchers were investigating heparin . 39. Natural heparin consists of molecular chains of varying lengths, or molecular weights. 40. These are obtained by various methods of fractionation or depolymerisation of polymeric heparin .