Re: [Histonet] problem with DAB staining

2013-03-07 Thread Rena Fail
> In what species was your primary antibody generated ? > > > > --- On Thu, 3/7/13, Nicole Cosenza wrote: > > From: Nicole Cosenza > Subject: [Histonet] problem with DAB staining > To: histonet@lists.utsouthwestern.edu > Date: Thursday, March 7, 2013, 11:50 AM > >

Re: [Histonet] problem with DAB staining

2013-03-07 Thread Rob Geske
Did you use a serum block ahead of your primary antibody ?  If yes, what species was it derived from? In what species was your primary antibody generated ? --- On Thu, 3/7/13, Nicole Cosenza wrote: From: Nicole Cosenza Subject: [Histonet] problem with DAB staining To: histonet

Re: [Histonet] problem with DAB staining

2013-03-07 Thread tahseen
Section should not dry in any stapes. Tahseen On 2013-03-07 22:50, Nicole Cosenza wrote: Hello all: I recently did IHC on paraffin embedded slides via the DAB method. Upon addition of the DAB, the entire section turned brown. I know this is not true staining, as I don't expect a high yield

Re: [Histonet] problem with DAB staining

2013-03-07 Thread Robert Schoonhoven
We would need to see the entire set of steps as there may be a variety of causes. Robert Schoonhoven, HT/HTL (ASCP) From: Nicole Cosenza To: histonet@lists.utsouthwestern.edu Sent: Thursday, March 7, 2013 12:50 PM Subject: [Histonet] problem with DAB

Re: [Histonet] problem with DAB staining

2013-03-07 Thread Jan Shivers
Some suggestions: 1) your endogenous peroxidase was not quenched properly or entirely 2) your primary antibody is too concentrated 3) your secondary antibody is too concentrated 4) your incubation times are too long 5) your incubation temperatures are too high 6) your DAB was mixed up incorre

[Histonet] problem with DAB staining

2013-03-07 Thread Nicole Cosenza
Hello all: I recently did IHC on paraffin embedded slides via the DAB method. Upon addition of the DAB, the entire section turned brown. I know this is not true staining, as I don't expect a high yield of my protein of interest. Any suggestions as to why this happened and what to do about it?