Back in the early 80's at Edgewood Area -- where rats were still being used -- an E-4 dressed in whites (as I was leaving for Zaire) told me we were looking for a new frontier where the FDA dare not tread. Their lifespan was already significantly less than even the local CDC imagined and the line of volunteers for non-approved FDA drugs was bordering on 500 meters from the building each morning. It did serve our national interests and I presume had little to do with their longevity.
Bookmarks