RBCs and lectins

From: Monica L. Nass (mnass@is.dal.ca)
Date: Wed Nov 26 1997 - 09:44:57 EST


Hello everyone.

I am having a similar problem, whether I use lectin or antibody.  My
problem has been that if I add antibody at low titre, there is no
fluorescence, but if I add it at high titre I find the cells have broken
to pieces.  The temperature during labelling has made no difference with
the antibody.  I only tried the lectin according to the concentration
suggested by the manufacturer.  The rbcs agglutinated and broke apart.  I
tried to improve my rbc storage method prior to the labelling to lessen
fragility, but this has not changed results.

Does anyone have a suggestion for fixing the cells prior to labelling?  I
have recently tried a method suggested by a fellow subscriber involving
methanol at -70C, however the cells didn't survive my labelling procedure.
I am going to attempt this method once more anyhow.  Why are red cells so
fragile??

Thanks.

       ^..^          
  _||__(oo)____||___  Monica Nass
  -||--"--"----||---  Research Associate
  _||_( __ )___||___  Department of Surgery
  -||--"--"----||---  Dalhousie University
   ||          ||     Halifax, Nova Scotia



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