It was cytology, but could be histology just as easily! http://www.chicagonow.com/downsize-maybe/2017/10/the-safety-engineers-reply-will-make-you-wonder/ Lester J. Raff, MD MBA UroPartners Medical Director Of Laboratory 2225 Enterprise Dr. Suite 2511 Westchester, Il 60154 Tel: 708-486-0076 Fax: 708-492-0203