The Cooperative Human Tissue Network (CHTN) is an NCI supported resource available to Investigators within and external to Penn. We procure human tissues & fluids from routine procedures and ship them directly to investigators for research purposes. Unlike banks, the CHTN works collaboratively with you to tailor specimen acquisition and processing to meet research-specific goals. Specimens can be provided in a variety of formats including fresh, frozen or fixed, mounted on slides, or as FFPE blocks. The CHTN is a national network that has been serving the scientific community for 25 years. Please visit www.CHTN.org for more information.