✦ LIBER ✦

Detection and Measurement of a Single Blood Cell Surface Antigen by Thermal Lens Microscopy

✍ Scribed by Hiroko Kimura; Fumiko Nagao; Asako Kitamura; Kazuya Sekiguchi; Takehiko Kitamori; Tsuguo Sawada

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 123 KB
Volume: 283
Category: Article
ISSN: 0003-2697
DOI: 10.1006/abio.2000.4614

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✦ Synopsis

A highly sensitive method for detection of antigens on the surface of a single blood cell using thermal lens microscopy is described. Colloidal gold, coated with antibody, was used to stain membrane antigens of leukocytes. Human leukocyte antigens on the lymphocytes and mononuclear leukocytes were observed by new thermal lens microscopy, which involves spectrometry using a laser-induced thermal-lens effect. Antigens of HLA-A, -B, and -C loci on the lymphocytes were identified and quantitated using a single cell. The image of HLA-A, -B, and -C antigen distribution on a mononuclear leukocyte was obtained. Our laser microscope, newly devised for measuring convex surface cells, is a powerful analytical tool for detecting and quantitating localized antigens in a single cell and/or cell-surface-associated molecules.

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