[Histonet] Frozen commercial controls for IgG, M and A for direct immunofluorescence?

[Perkocha, Luke]

Dear Histonet-ers,

We currently use tonsil for a positive control tissue for IgG, A and M when we do direct immunofluorescence on skin specimens. We look for occasional plasma cells that stain positive in the cytoplasm, but of course there is no positive ID of what is staining, since the tonsil contains a mixture of plasma cells.

Is anyone aware of a commercial source for a control for these reagents that can be used in DIF staining of frozen sections (not paraffin)?

Many thanks,

Luke

Luke.perkocha <@t> ucsf.edu