摘要:
A c-Kirsten ras oncogene has been isolated from a human lung tumor cell line. This c-Kirsten ras has a mutation in codon 61 of the second coding exon and is capable of transforming NIH/3T3 mouse fibroblast cells to tumorigenic cells.
摘要:
A micromanipulator comprises a miniature operating tool such as a needle, micro-pippet, micro-electrode or the like which is disposed on a movable member of a microscope, such as an illuminating condenser lens, which is movable in the direction of the optical axis of an objective lens.