System for testing biological and chemical agents using two or more cartridges simulating systems in the body

The present invention relates to joining two or more cartridges containing cell or tissue cultures from different organs found in the human body in fluid connection. It includes a vitro method and system for testing chemicals and agents as they pass through organs other than the brain or combinations of body systems including the brain. It greatly enhances the ability for researchers to test a proposed chemical or agent on human cells and tissue prior to testing it in vivo. Often, it is found that chemicals or agents have different reactions when tested on a single organ in vitro or in animals, than it does in the human body.