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Ergatandromorphs are examples of genetic chimeras found in ants, in which they exhibit features of both minor workers and males. In this study, we report a lateral ergatandromorph of Camponotus yamaokai Terayama & Satoh, 1990. The right side of this specimen was characterized as a male and the left side as a minor worker, although some body parts did not show a clear division. The specimen had partially atrophied genitalia on the right side of the metasoma while the genital structures on the left side were absent. The individual engaged in frequent self‐grooming and received trophallaxis and allogrooming from the nestmates. This is the first report of the lateral ergatandromorph in the genus Camponotus, which has few documented cases of gynandromorphism. [ABSTRACT FROM AUTHOR]

Our previous study demonstrated that among the various T-cell receptor Vb gene segments, T-cell receptor Vb6 gene-bearing T cells are predominant in periodontitis lesions. To explore the clonality of T cells expressing Vb6 T-cell receptor, which is determined by the heterogeneity of the complementarity-determining region 3(CDR3), Vb6-Cb polymerase chain reaction products derived from gingival tissue and peripheral blood of periodontitis patients were analyzed by single-strand conformation polymorphism and nucleotide sequence. Both techniques provided quite similar results in terms of the number of accumulated clones in which clonal accumulation of T-cell receptor Vb6-bearing T cells was found in most periodontitis lesions but not in peripheral blood. From the analysis of deduced amino acid sequences, a possible conserved amino acid residue in the CDR3 region of the periodontitis lesion-derived sequences was found in most patients. This conserved amino acid motif however, was not identified. Furthermore, skewed Jb gene segment usage was observed for expanded clones from periodontitis lesions. Our results suggest that T cells infiltrating periodontitis lesions are responding to a restricted number of antigens or epitopes. [ABSTRACT FROM AUTHOR]