The monocytic leukemic cell line U937 can be infected with human immunodeficiency virus type 1 (HIV-1) to become permanently infected virus producers. Uninfected U937 cells express T4 (CD4) antigen and form syncytia when mixed with HIV-1 producing cells. Anti-T4 monoclonal antibodies block syncytium formation indicating that the HIV-1 receptors on U937 cells include T4 antigen.
View Article and Find Full Text PDFTwenty-eight patients with aneurysms of the posterior circulation were managed by direct operations, 53.6% of these being done within 14 days of a subarachnoid hemorrhage. Transvenous cardiac pacing was used in 4 of the 13 patients with aneurysms of the basilar bifurcation in order to produce a short period of profound hypotension while final dissection and clip application was performed.
View Article and Find Full Text PDFThe scapular flap is a medium-sized flap combining many of the good qualities of others, such as thinness and minimal donor site deficit, with the potentialities of a consistently long pedicle that allows combination with other adjacent flaps. The anatomy of the flap and its application in nine clinical cases is described.
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