Yes a company by the name of Applied Immune Sciences, Menlo Park, CA.
phone: 415-326-7302 supplies MicroCELLector Mouse anti Rat T-25 cell
culture flasks for the selection of rat monoclonal antibody labeled
cells. I have used these flasks for the selection of murine B cells by
eliminating the T cells using an antibody cocktail consisting of
anti-Thy and anti-CD3. They are good in enriching for B cells though
they do not get completely rid of the T cells, I have found that using a
cocktail of antibodies works better and also do not load a large number
of labeled cells on the flasks. The advantage is that they are much
cheaper than using the Dynabeads and you also do not have to get the
antibody off the cells since it works by negative selection.