Cytology and Genetics		, 
		vol. , 
		no. ,  , 
		doi: https://www.doi.org/
	
	
					Molecular-biological approaches was applied for detection of Philadelphia chromosome in patients with chronic myeloid and acute lymphoblastic leukemias. It includes bcr-genomic probes and polymerase chain reaction with specific bcr/abl primers. The latter is m c86 ore preferable for clinic use. Different diagnostic methods are compared and leukemias etiology problems are discussed.					
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