Re: Lymphocyte Subsets after CD34 selection

Timothy J Farley (tfarley@computer.net)
Tue, 8 Jul 1997 00:13:01 -0400

Chang-Seok,

I've done a couple CD34 selections on G-CSF mobilized normal-donors with
the Baxter ISOLEX system and have never experienced such results. I've
observed that the non-target cells that are captured are primarily
monocytes (CD14+). I almost never see any CD19+ positive events.

It's common to see CD34+CD19+ events in the bone marrow but I've never
observed these cells mobilized to the peripheral blood. Aftter G-CSF, most
are CD34+CD33+.

What was the CD34% of the product? Were these cells also CD45dim? Were
all the events in the selected fraction "lymph-sized" based on scatter?
What was the circulating peripheral CD34/ul count?

Drop me a note at tfarley@computer.net
Maybe I can be of some help

Dr. Timothy Farley
New York Blood Center Clinical Services
Valhalla, NY


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