Maffucci's syndrome associated with spindle cell hemangioendothelioma.

The case of a 49-year-old man with Maffucci's syndrome, who developed multiple spindle cell hemangioendotheliomas, is presented. The case provides support for recent reports suggesting an association between this peculiar vascular lesion and skeletal enchondromatosis.

[Antimicrobial and microbicidal activities of tea and catechins against Mycoplasma].

We examined tea extracts, (-) epigallocatechin gallate (EGCg) and theaflavin digallate (TF3) for their antimicrobial and microbicidal activities against Mycoplasma. Green tea and black tea showed antimicrobial activities against M. pneumoniae.

[MR imaging of a spinal arachnoid cyst: report of two cases].

Two cases of spinal arachnoid cyst were examined by MR imaging at 1, 5 T (Signa; General Electric). In both cases, a large cystic mass was demonstrated in the thoraco-lumbar region. On a T2-weighted mid-sagittal image, a hypointense septum between the cystic mass and the subarachnoid space was identified in both cases.

Loss of virulence in Shigella strains preserved in culture collections due to molecular alteration of the invasion plasmid.

Fifty-two Shigella strains long preserved by three Japanese culture collections were examined for virulence. All of them were avirulent when judged by the focus-plaque assay and the ability to bind Congo red. Fifteen strains had a plasmid comparable in size to that responsible for epithelial invasiveness and were positive in hybridization tests with a probe derived from a plasmid cistron, virG.

Theory of electric dissipative structure in Characean internode.

A band-type alternating pattern of acidic and alkaline regions formed along the Characean cell wall is discussed theoretically. The model system is constructed from linear diffusion equations for the concentration of H+ outside the internode and in the protoplasm. The plasmalemma is taken as a boundary transporting H+ under energy supply by light.