Investigators who are able to operate bench-top flow cytometers independently of facility staff can request after-hours Facility access to Heath Vignes, Michael Shey or Tom Kaufman. Prior training must be evident to Facility staff in order to gain after-hours access. Access privileges are usually granted within the same day as the request (unless the request is made late in the day). A temporary access card is available at the facility for immediate after-hours access.