[Cytometry] Chromosome sorting

Matthew Burton matt.burton at mcri.edu.au
Mon Feb 9 23:42:30 EST 2009

We are sorting human chromosomes on a MoFlo (non XDP) and are finding
that the intensity of the Hoechst and Chromomycin A3 takes a while to
stabilise. The Hoechst intensity drops while that of CA3 increases
slightly over a period of a few minutes until stable. Attached is a word
doc showing the dyes intensity versus time. This does not happen with
any beads we have used. Has anyone seen this or have any ideas on what
would be the cause? In case it helps we are exciting CA3 1st with 300mW
of 457.9 nm at pinhole 1 and Hoechst at pinhole 3 with 300mW of UV.
490LP for CA3 and 400LP480SP for Hoechst.



 <<Chromo Int Variation.doc>> 
Matthew Burton
Flow Cytometry and Confocal Microscopy Facility 
c/o Cancer Labs 6th floor Room SW608
South West Building
Murdoch Childrens Research Institute
Royal Children's Hospital
Flemington Rd Parkville 3052
Victoria, Australia

Ph:     (613) 9345 5760
Fax:    (613) 9345 4993
email:  matt.burton at mcri.edu.au

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