F(AB) SECONDARY ANTIBODIES - A GENERAL-METHOD FOR DOUBLE IMMUNOLABELING WITH PRIMARY ANTISERA FROM THE SAME SPECIES - EFFICIENCY CONTROL BYCHEMILUMINESCENCE
A. Negoescu et al., F(AB) SECONDARY ANTIBODIES - A GENERAL-METHOD FOR DOUBLE IMMUNOLABELING WITH PRIMARY ANTISERA FROM THE SAME SPECIES - EFFICIENCY CONTROL BYCHEMILUMINESCENCE, The Journal of histochemistry and cytochemistry, 42(3), 1994, pp. 433-437
We propose a general solution to the problem of using antibodies origi
nating in the same species for double immunohistochemical labeling. It
relies on the use of a two-step protocol in which a secondary polyclo
nal monovalent F(ab) antibody present in the first step blocks access
in the second of the secondary antibody to the primary antibody, which
is continuously present from the first step. The monovalence of the F
(ab) fragment eliminates the possibility of its linking the primary an
tibody from the second step. We designed two efficiency tests to explo
re the limits of the method by the very sensitive chemiluminescent sys
tem applied to sections of human pituitary tissue. They confirmed both
the validity of the method and the necessity of adapting working cond
itions to obtain a complete lack of interference.