PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9093912-4 1997 Specifically, when proteoglycan synthesis was blocked by treatment with 10(-10) M retinoic acid, extensive mineral deposition occurred on a matrix devoid of both proteoglycans and cartilage nodules. Tretinoin 82-95 versican Gallus gallus 19-31