“…Its recombinant analogues are a new class Abbreviations: PEG, polyethylene glycol; GCSF, human granu locyte colony stimulating factor; PEG GCSF, PEGylated GCSF; APS, active pharmaceutical substance; MP, medicinal product; IOC, ion exchange chromatography; HIC, hydropho bic interaction chromatography; GC, gel chromatography; FN, febrile neutropenia. 1 Corresponding author: phone/fax:+7 (916) 973 25 27; e mail: nvkononova@rambler.ru.…”