Is it possible to help out this person? Begin forwarded message: > From: "Wang, Xin-Xiang" <WangXX@MedImmune.com> > Date: November 19, 2006 1:22:54 PM PST > To: lbarsky@chla.usc.edu > Subject: Would you please forward my question to the Purdue > cytometry maillist? > > Dear Dr. Barsky: > > Sorry that I am bothering you. I cannot subscribe to the Purdue > Flow Cytometry Email list due to some email problems. Would you > please forward my question to the email list? Thank you very much! > > Sincerely, > Xinxiang > ~~~~~~~~~~~~~~~~~~~~~~~~ > Hello, > > I recently encountered a weird phonomenon. After staining of yeast > spheroplast, only 3% of the cells were positive in terms of cell > surface protein expression, as determined by BD LSRII. But 30% > were positive when the exact samples were run on Guava EasyCyte > Plus! I wonder what causes such great difference between two flow > cytometers and which machine I should trust. My instrument > settinges seeminly were correct because both machines detected both > positive and negative cells. The difference is the fraction of > positive/negative population. > > Please email me directly at wangxx@medimmune.com if you have any > hints. Thanks! > > Sincerely, > Xinxiang Wang > > ****************************************** > Scientist I > MedImmune Inc. > One Medimmune Way, > Gaithersburg, MD, 20878 > > WangXX@Medimmune.com > Tel: (301)398-4517Received on Tue Nov 21 13:18:00 2006
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