PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6173742-8 1981 When unfixed hnRNP are centrifuged in a CsCl gradient containing 4M guanidinium chloride instead of 0.5% sarkosyl as above, a band containing only one RNA species was observed. sarkosyl 105-113 heterogeneous nuclear ribonucleoprotein C Homo sapiens 13-18