The CSU Patent Review Committee has approved the invention disclosure of Dr. Moo-Yeal Lee, an associate professor in the Department of Chemical and Biomedical Engineering (CBE), titled Perfusion Plate for Microarray 3d Bioprinting. The invention relates to using a unidirectional flow perfusion plate to support growth of 3D printed miniature cell constructs on a pillar plate. The highly specific cell constructs provide very accurate toxicity screening capabilities for drug compounds as well as screening of other biological substances. The miniaturized plate is more cost-effective than current large-scale tissue constructs.