Complex sentence: Since tetracycline is absorbed into bone, it is used as a marker of bone growth for biopsies in humans, and as a biomarker in wildlife to detect consumption of medicine-or vaccine-containing baits.
Split into simpler sentences: Since tetracycline is absorbed into bone, it is used as a marker of bone growth for biopsies in humans. It is also used as a biomarker in wildlife to detect consumption of medicine-or vaccine-containing baits.