The use of glutaraldehyde to circumvent these difficulties was considered because this fixative has two reactive aldehyde groups which might attach simultaneously to antibody and antigen and bind ...

8 Complement fixation. Complement-fixation tests ... bands formed in agar gel resembled those formed by antigen–antibody reactions, it seemed likely that the reactive factor in the patient's ...

4 The standard method of demonstrating this factor remains the L.E.-cell test, which is a complex process involving the reaction ... nucleohistone as antigen. The complement-fixation procedure ...

452-473 (22 pages) In serums of rabbits immunized with various acid-fast bacteria there is present a complement-fixing antibody ... fixation titer immunized with acid-fast strains. Such fixation, ...