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(A). Release profiles of low molecular weight heparin, LMWH, in PBS pH 7.4 from non crosslinked chitosan microspheres (HB) and with the highest genipin crosslinking condition, HGBa (25 mM genipin, 15 h, 50 ºC). (B). Release profiles of LMWH in PBS pH 7.4 from non crosslinked chitosan microspheres (HB) compared with the slightest crosslinking condition, HGBf (2.5 mM genipin, no thermal incubation).
