Once optimal detector gains were determined, an extensive brightness index of dyes was established on this instrument using sequential single staining of mouse splenocyte with 43
different antibody conjugates against mouse CD8a (53 - 5.8).
For double labeling, the cells were incubated with primary
antibodies against TuJ1 and L1 or GFAP, then biotinylated anti-mouse or rabbit (rat) IgG (Vector, Burlingame, CA, USA), and finally with avidin - rhodamine (Vector) and corresponding FITC -
conjugated secondary
antibodies (from
different host species, Chemicon and Molecular Probes, Invitrogen).
Antibody drug
conjugates (ADCs) represent a challenge for bioanalytical scientists, due to their inherent heterogeneity (i.e.,
different Drug - to -
Antibody Ratios), high molecular weight, presence in complex biological matrices and changes in ADC composition in biological samples.