Buy this secondary from Molecular Probes, that is the only source as far as
I know unless you want to conjugate the Alexa dye to your own secondary
antibody.  
Molecular Probes has kits to do conjugations. 

You did NOT say which Alexa fluor you want, their are many different Alexa
fluorophore conjugates in different colors or if you want a FITC
(fluorocein equivalent i.e FITC) then it would be goat antiMouse-Alexa 488.
 Molecular Probes has an extensive and wonderful website.  If they don't
have goat antiMouse Alexa 488, they will have other host secondary
conjugated to their Alexa dyes.    


Gayle Callis
MT,HT,HTL(ASCP)
Research Histopathology Supervisor
Veterinary Molecular Biology 
Montana State University - Bozeman
PO Box 173610
Bozeman MT 59717-3610
406 994-6367 (lab with voice mail)
406 994-4303 (FAX)



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