Funky cool colors may be popular with kids, but what about with caterpillars? Chesapeake PERL mass produces antibodies, enzymes, viral antigens, and other proteins in insect larvae, specifically the cabbage looper caterpillar. The company uses baculovirus expression to produce the proteins, a process that turns the larvae fluorescent pink. Chesapeake PERL's clients include drugmakers, chemicals manufacturers, and other companies.