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Biomedical subjects

I Watanabe

Publications and source records attributed to I Watanabe.

At least 649 records · Page 36Linked to original sources
PubMed1975

An amber suppressor of Escherichia coli strain KO1.

The suppression characteristics of Escherichia coli strain KO1 have been investigated. The growth patterns of nonsense mutants of RNA (GA and f2) and DNA (lambda and T4) phages suggested that KO1 carried an amber, but not ochre or opal suppressors. The comparison of KO1 with previously identified amber suppressors indicated that KO1 differed from su1, su3 and su6 in its suppression pattern. KO1 and su2 shared some properties in common, for instance, their ability to suppress GA amber mutants with one exception (amN20) and the restriction of suppression capacity by the strr mutation. However, the suppression efficiency of KO1 (48%) was about three times that of su2 (18%). A possibility that KO1 contained a new amber suppressor is discussed.

Coliphages↗
PubMed1975

Malignant mixed tumor of the liver: report of a case and a review of the literature.

Malignant mixed tumor of the liver seen in a 4 year old girl was reported. Progressive hepatomegaly, jaundice, anemia, and extraordinarily high level of serum total cholesterol were noted clinically. Postmortem examination had disclosed that most part of the tumor was occupied by fibrosarcomatous cell growth admixed with rhabdomyosarcomatous component. In addition, carcinomatous component was distinctly recognized in a restricted part of the liver tumor. Previous reports on malignant mixed tumor of the liver were reviewed and it was emphasized that the histological diagnosis of malignant hepatic mixed tumor must be cautiously followed Edmondson's criteria; which requires existence of both epithelial and mesenchymal components of neoplastic nature and malignancy of either or both components in a hepatic tumor.

Carcinoma↗