AIM and METHOD: The relationship between the evolution of the reticulin fibres(RF) or the collagen fibres(CF) and the growing of hematopoietic cells in long-term bone marrow culture (LTBMC) from 15 paticnts with acute myeloid leukemia (AML) and form 6 normal subjects was observed by inverted microscope, Gomoris staining and Massons staining were used. RESULTS: (1)The amount of RF contents of 8 AMLs,with self- maintained(AMLsm) in the 1～8 weeks-old-culture was significant less than that of normal control and 7 AMLs,without self-maintained(AMLnsm) ( P

Objective To establish a method for determining the dissolution of isoniazid tablet in vitro and evaluate the dissolution profiles.Methods The paddle method was used for the dissolution test and the rotation rate was set at 50 r/min.The hydrochloric acid solution (pH 1.2),acetate buffer solution (pH 4.5),phosphate buffer solution (pH 6.8) and water (900 mL) were used as the dissolution media.HPLC was used for the determination of dissolution quantity.Results There was a good linear relationship between the quality concentration of i soniazid and peak area in the range of 0.1981-0.9904μg (r =0.9993).The average recovery was 100.2％.Precision,reproducibility,and specificity tests were good.Among the determination of 16 manufactures,the dissolution profiles in water of four manufactures were not similar with Sandoz reference preparation.Conclusion The HPLC method is simple.The accuracy and specificity of determination of isoniazid dissolution are improved.There is significant difference in the dissolution profiles between different manufactures.The method can be used for the determination of dissolution curves for isoniazid tablets.