Abstract: A method of diagnosing cat scratch disease and a method of diagnosing bacillary angiomatosis in a subject by detecting the presence of Rochalimaea henselae or an immunogenically specific determinant thereof in the subject is provided. Also provided is a vaccine comprising an immunogenic amount of a nonpathogenic Rochalimaea henselae or an immunogenically specific determinant thereof and a pharmaceutically acceptable carrier. A method of diagnosing Rochalimaea quintana infection in a subject by detecting the presence of a nucleic acid specific to Rochalimaea quintana in a sample from the subject is provided. A purified heat shock protein of Rochalimaea is provided.

Abstract: The present invention relates to a method of identifying DNA encoding an osteoclast-specific or -related gene product. The method comprises hybridizing DNA with a stromal cell+, osteoclast+probe, or with cDNA or mRNA from an osteoclastoma, and with a stromal cell+, osteoclast-probe, or with cDNA or mRNA from stromal cells; and identifying DNA which hybridizes to the stromal cell+, osteoclast+probe, or to cDNA or mRNA from osteoclastoma, but not to the stromal cell+, osteoclast-probe, or to cDNA or mRNA from stromal cells.

Abstract: A process for producing useful quantities of a cyclic hydroxide, such as pyrocatechol from a compound having a benzene ring, such as phenol using a Bacillus is described. The process uses tetracycline to inhibit the modification of the cyclic hydroxide by the Bacillus. Pyrocatechol and other related compounds are commercially useful chemicals.