Complex sentence: In humans receiving a dose of PhIP equivalent to that found in very well-done chicken, DNA and protein adducts were formed in the colon and blood, however the adducts were unstable and declined over a 24 hour period.
Split into simpler sentences: In humans receiving a dose of PhIP equivalent to that found in very well-done chicken, DNA and protein adducts were formed in the colon and blood. However, the adducts were unstable and declined over a 24 hour period.