Unlike the Nazi experiments these don't seem as well known in the west, though they've had a potentially greater effect. I say potentially because most of the doctors were pardoned (the ones that weren't captured by the Russians) and several rose to prominence in Japanese medical circles. The results of Unit 731 are mostly classified, and have been used to jumpstart biological weapons programs in both the USSR and the US (at least one Unit 731 doctor moved to the US to work on bioweapons).