P655: LIMITATIONS OF USING CD26+ LEUKEMIA STEM CELL QUANTITATION IN CML PATIENTS TO ASSESS RESIDUAL LEUKEMIA CLONE - Nikolay Kapranov; Yulia Davydova; Kseniya Nikiforova; Irina Galtseva; Oleg Shukhov; Margarita Gurianova; Ekaterina Chelysheva; Anna Turkina (HemaSphere, 2023)