> Let me explain the difference: all of our research had strict ethical guidelines backed by IRB approvals, the procedures were performed by trained biologists.

> Let me explain the difference: all of our research had strict ethical guidelines backed by IRB approvals, the procedures were performed by trained biologists... Maybe your university was different, but at the University of California, no IRB approval is necessary for invertebrates. This is part of what makes fruit flies such attractive model organisms (nb I am a fruit fly biologist).