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精胍(Spermidine)和精铵(Spermine)等多胺及其前体腐胺(Putrescine)普遍存在于自然界,在某些组织中含量也很高,如~3H-腐胺能选择性集聚在大鼠的前列腺和胰脏中,在肿瘤患者的尿和血清中有很高浓
Polyamines such as Spermidine and Spermine and their precursors Putrescine are common in nature and are found in some tissues at high levels. For example, ~ 3H-putrescine can selectively accumulate in large In the rat prostate and pancreas, there is a very high concentration in the urine and serum of tumor patients