title: A modification of the ELISA-double sandwich method for estimating the concentration of habutobin.
abstract: A monoclonal antibody to the thrombin-like enzyme, habutobin, was produced. An ELISA-double sandwich method employing this monoclonal antibody was devised as a method for determining the habutobin concentration in vitro. However, the absorbance of the control sample in such an ELISA-double sandwich procedure was too high to estimate low levels of the enzyme. The present study therefore attempted to establish a reliable ELISA-double sandwich method in which the absorbance of the control sample was lower than previously, and which had a high sensitivity, in order to determine the habutobin concentration in vitro and in vivo. The modification of the ELISA-double sandwich technique employing the monoclonal antibody against habutobin, the purified rat IgG against habutobin and POD-mouse anti-rat IgG2a, provided a reliable means of determining the habutobin levels in the circulating blood of rabbits.
authors.affiliation: Department of Physiology, School of Medicine, University of Ryukyus, Okinawa, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Nakamura
authors.forename: K
authors.initials: K
authors.lastname: Hanashiro
authors.forename: T
authors.initials: T
authors.lastname: Kosugi
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods*; D006041:Goats; D007106:Immune Sera; D051379:Mice; D011817:Rabbits; D051381:Rats; D012697:Serine Endopeptidases / Q000097:blood* / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D007106:Immune Sera; D012697:Serine Endopeptidases; C078095:habutobin