Secondary labeling was carried out
using isotype matched Alexa - fluor labeled secondary antibodies (AF488, 568 and 594, all from Invitrogen Corp).
Not exact matches
Use negative controls (unstained and
isotype control antibodies) to determine gating of populations.
Primary isolates that were incubated with identical concentrations of FITC - and PE - conjugated
isotype standards were
used to assess the level of background intensity.
An
isotype control for the secondary antibody was
used as a negative control in both samples.
Therefore, it is critical to
use a secondary antibody that specifically recognizes that
isotype.
Therefore, to maximize detection of the target, it is best to
use a secondary antibody that recognizes all
isotypes.
Isotype control antibody (black line) was rabbit IgG (monoclonal)(1μg / 1x106 cells)
used under the same conditions.
Isotype control antibody (black line) was mouse IgG1 [ICIGG1](ab91353, 2µg / 1x106 cells)
used under the same conditions.
An Alexa Fluor ® 488 conjugate with
isotype specificity to the mouse antibody was
used as a secondary antibody.
But once the
isotype batteries are
used up they will be disposed of only through authorized agents of the manufacturer.