April, 9 1999

Dear colleagues,

we are involved in the investigation of the role of the long arm of chromosome 5 in the pathogenesis of myeloproliferative disease and are therefore very interested in obtaining DNA and or cell lines both from sporadic and familial cases with 5q- as well as from cases of secondary 5q-after cytostatic chemotherapy and are therefore looking for a collaboration
on this subject.

Best regards.