Dr. John Harbo, Dr. Jeff Harisson and Dr. RWK. Punchihewa (right to left) at the lab sign of the Baton Rouge USDA Bee Lab. The following is a photo-assay showing how to prepare bees for an experiment. I think that different queens were being evaluated for their ability to suppress mite reproduction. To do so one must start with many colonies as similar as possible (mite levels, number of bees, genetic makeup of bees etc) and the only variable would be the queen genetics. May 19, 1999.