The Folate level of the patients with leucocythemia and malignancy was also lower( P< 0 01).

白血病、恶性肿瘤组血清叶酸低于正常（P<0 .0 1 ）。

Objective to explore immunophenotyping specificities in children's acute leucocythemia via flow cytometry.

目的探讨儿童急性白血病流式细胞术免疫分型的特点。

Purpose to probe into the correlation factors and nursing methods of hospital infections in leucocythemia patients.

目的：探讨白血病患者医院感染的相关因素及护理对策。

Congenital abnormity, leucocythemia and death of suddenness threaten the life of child below 5 years old severely, it must be prevented and cured.

先天异常、白血病和意外死亡严重威胁5岁以下儿童的生命，必须加大防治力度。

The main cause of newborn period and infant period was congenital abnormity, leucocythemia and death of suddenness could not be ignored in 1~4 years old children.

新生儿和婴儿期主要死因为先天异常，1~4岁儿童的白血病和意外死亡不容忽视。

Conclusion Abnormal expression of tumour related genes of patients exposed to benzene suggests that they may be the key genes, which play important role in benzene-induced leucocythemia.

结论苯暴露患者肿瘤相关基因的表达异常，提示其可能为致白血病的关键基因，在苯致白血病中起着重要的作用；

The major achievements made in this dissertation are as follows: 1 . The basic pathology of leucocythemia has been summarized and the conventionally therapy of leucocythemia was fully introduced.

本文对白血病的基本病理做了综述并纵观了目前白血病的一些常规治疗方法。