Version 79 Released

New and Updated Topics and Pathways. In V79 we have introduced the new topic Drug Absorption, Distribution, Metabolism and Excretion in which we cover both pharmacokinetics and pharmacodynamics of Aspirin , Azathioprine , and Paracetamol . Topics with new or revised pathways in this release include Cell Cycle ( Cyclin D associated events in G1 and Drug-mediated inhibition of CDK4/CDK6 activity ), DNA Replication ( Assembly of the pre-replicative complex ), Immune System ( Interferon alpha/beta signaling ), Metabolism ( Cholesterol biosynthesis and Choline catabolism ), and Sensory Perception (