Preclin Biosystems AG We offer a comprehensive in vivo preclinical testing platform for the identification and validation of lead candidate therapeutics. Our extensive range of chronic inflammatory and infectious disease models are run routinely in our core facility providing a ‘one stop shop’ for preclinical drug efficacy testing. Our parallel testing approach for in vivo assessment of lead candidates can provide an overall efficacy, side effect and target market analysis condensing the preclinical phase of drug development dramatically.