PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1382654-7 1992 Although theta for Ficoll at rs = 35 A was much smaller than the corresponding value for dextran, it was still approximately 30 times greater than typical values of the filtrate-to-plasma concentration ratio reported for serum albumin (a polyanion) in the rat, in agreement with the concept that glomerular charge-selectivity normally plays an important role in the prevention of albuminuria. polyanions 238-247 albumin Rattus norvegicus 221-234