Complex sentence: It was subsequently found in other tissues including macrophage where it co-exists with ADA1 where the two isoforms regulate the ratio of adenosine to deoxyadenosine to potentiate the killing of parasites.
Split into simpler sentences: It was subsequently found in other tissues including the macrophage where it co-exists with ADA1. The two isoforms regulate the ratio of adenosine to deoxyadenosine potentiating the killing of parasites.