>"We" decided that Tuskegee was bad enough that it should be stopped before harm is done, and that there is no appropriate or sufficient "punish[ment] in retrospect" for the fallout.
The thing is, although you and the linked article seem to be associating IRB approval just with human studies, these days you need it for mouse studies.
The thing is, although you and the linked article seem to be associating IRB approval just with human studies, these days you need it for mouse studies.