Biomedical subjects

Xiao-lan Xu

Publications and source records attributed to Xiao-lan Xu.

3 recordsLinked to original sources

PubMed2004

[Comparison of the botanic morphology and blooming characteristics of four cultivars of rose].

OBJECTIVE: To establish identifying method for further development and utilization by studying botanic morphology and blooming characteristics of four varieties of roses in Jiangsu province. METHOD: Flower-bud and flower-form were observed by dissection and plant modality and blooming process were investigated. RESULT AND CONCLUSION: The flower form and plant modality was obviously different among the 4 varieties of roses. The process of differentiation of flower-bud could be divided into five stages: the transformation of nutritive growth cone, the occurrence and development of sepal, formation of petal primordium, formation of pistil and stamen. The blooming process was made up of flower-bud period, display-petal period, initiating blooming period, blooming period, withering period and corresponding biological marks.

Ecosystem↗

PubMed2003

[Analysis of alkaline phosphatase staining results in 238 cases of malignant lymphoma].

OBJECTIVE: To examine the significance of alkaline phosphatase (ALP) staining in clinical characterization of malignant lymphoma cases. METHODS: Fresh peripheral blood smear obtained from 238 cases of malignant lymphoma, including 23 cases with bone marrow involvement (BMI) 189 cases without BMI(NBMI), and 26 cases of lymphoma cell leukemia (LCL), were examined by ALP staining, and the results were compared with those of 40 normal control subjects. RESULTS: With the gradual progression of lymphoma, the patients tended to have higher ALP scores, and the percentages of the subjects with a score higher than 250 in the control, NBMI, BMI and LCL were 0, 4.8%, 39.1%, 53.9% respectively, showing significant differences between the four groups. CONCLUSIONS: Increased ALP activity can be indirectly indicative of lymphoma progression, and ALP staining results may provide insight into the clinical staging and prognosis of malignant lymphoma.

Adolescent↗

PubMed2003

[Surface morphology of CD34+ cells under atomic force microscope].

OBJECTIVE: To observe the difference in surface morphology and structure between CD34(+) cells from normal human subjects and from patients with leukemia. METHODS: Bone marrow mononuclear cells from 3 normal human subjects and 3 patients with M2b leukemia were collected by Percoll gradient centrifugation, followed by purification of CD34(+) cells by means of immunomagnetic bead separation (MiniMAC) and examination with flow cytometry. The morphology of the cells were then observed with optical and atomic force microscope (AFM) in air. RESULTS: No significant difference was identified between the two cells under optical microscope. With atomic force microscope, numerous microvilli were observed on the surface of CD34(+) cells, and the normal cells and those from the leukemic patients showed significant difference in terms of the roughness of the cell surface. CONCLUSION: Normal CD34(+) cells have more rough and erosive surface structure than leukemic CD34+ cells (M2b).

Antigens, CD34↗