I'm a research assistant and one of my major jobs is to genotype the mice so that we know which ones to use for experiments. Well one day I forgot to label tubes before I put them in a spinner and I don't know which side was which. I continued and forgot about that. 3 months laters we tried to use the mice for an important experiment but it didn't work because the mice were suppose to be the kind that have cells that fluoresce naturally under a microscope but I ****ed up and they were all just wild type mice and you couldn't see anything
Also one time I thought I housed two male mice for an experiment months later but it turned out one was a female and when we went to do the experiment baby mice were in the cage everywhere and you had to use virgin mice
I never got fired though somehow, and got awesome scores for my performance review
