The clinical and autopsy findings of three cases of B cell lymphoma simulating malignant histiocytosis are reported. Case 1 was 60y.o. female, case 2 was 75y.o.male and case 3 was 61y.o.female.
A clinical and cytogenetical study of mentally retarded male adults with an IQ of below 35 has been carried out in the Ranzan Colony for Mental Re tardates, Saitama, Japan. The study showed one fragile X-positive retardate with IQ 23 in the 53 residential retarded patients, giving a hemizygote prevalence of 1.9% (1/53). Macroorchidism and elongated ears, practical markers for the clinical diagnosis of fragile X-linked mental retardation, were also detected in this 43-year-old subject with fra(X)(q27.3). He is amiable and no autistic be havior has been observed. The subject, however, has been suffering from epilepsy since childhood and has cataract in both eyes.
Group 4 phages TW19 and TW28 of Escherichia coli possess a "read-through" (IIb) protein, although group 2 phage GA does not. This may have implications conceming the evolution and classification of RNA phages.
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