Freezing of the chorioallantoic membrane after brief fixation in formalin preserves antigenicity of cellular components and allows penetration of ferritin-conjugated antibody. Dense aggregates of viral antigen, presumed to be of the soluble type, were found in the nuclei of cells infected with influenza virus. Intracytoplasmic antigen, on the other hand, was widely dispersed. The experimental o...

Soluble and particulate complement-fixing antigens of Rickettsia sennetsu were prepared from spleen suspensions of mice infected with the rickettsia and treated with cyclophosphamide. The medium used during purification of antigens, a solution consisting of equal volumes of phosphate-glutamate-sucrose buffer and veronal-buffered saline, was suitable for obtaining antigens with high titers and n...

computational tools are reliable alternatives to laborious work in chimeric protein design. in this study, a chimeric antigen was designed using computational techniques for simultaneous detection of anti-htlv-i and anti-hbv in infected sera. databases were searched for amino acid sequences of hbv/hlv-i diagnostic antigens. the immunodominant fragments were selected based on propensity scales. ...