Publications (2)2.05 Total impact
Article: Detection of fetal erythroblasts in maternal blood by one-step gradient enrichment and immunocytochemical recognition.Early Human Development 01/1997; 47 Suppl:S95-7. · 2.05 Impact Factor
Article: Multiple and sensitive fluorescence in situ hybridization with rhodamine-, fluorescein-, and coumarin-labeled DNAs.[show abstract] [hide abstract]
ABSTRACT: We have tested the use of several newly developed red, green, and blue fluorescent dUTPs in direct, multiple, and sensitive fluorescence in situ hybridization procedures. Among the ones tested, the tetramethylrhodamine-dUTP proved to give the best sensitivity; using conventional epifluorescence microscopy, cosmids could be visualized with a hybridization efficiency of 90%. Fluorescein-dUTP permitted visual cosmid detection with 50% efficiency, and, to the human eye, the green signals appeared less bright. With a blue fluorescent coumarin-labeled dUTP, only highly repetitive target sequences could be visualized directly. Imaging with a cooled CCD (charged coupled device) camera for prolonged integration times permitted localization of small targets using probes labeled with red and green fluorochromes. Visualization of a 1.8-kb single copy sequence with a rhodamine-labeled cDNA proved feasible. The strategy of identifying hybridization sites with multiple colors was successfully applied for multiple hybridizations to repetitive and unique targets, using the red and green labels directly and the biotin label indirectly with one layer of avidin-coumarin.Cytogenetics and cell genetics 02/1993; 63(1):73-6.