Mouse having a disrupted lck gene

Multicellular living organisms and unmodified parts thereof and – Nonhuman animal

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435354, 435325, C12N 500, C12N 1500

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056251220

ABSTRACT:
A mutant non-human mammal lacking expression of the lymphocyte-specific tyrosine kinase p56.sup.lck. Lck deficient mice possess few peripheral T lymphocytes and a pronounced thymic atrophy. The remaining thymus contains immature thymocytes surrounded by a perturbed thymic microenvironment. p56.sup.lck appears to play a crucial role in early thymocyte differentiation.

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