Atypical lymphocytosis resembling non-Hodgkin's lymphoma in peritoneal effusion of infectious mononucleosis: a case report.

Peritoneal effusion appears to be an unusual complication of infectious mononucleosis (IM). The cytological features of peritoneal effusion from a patient affected by IM are presented. The patient was a 21-year-old Japanese woman, with typical and physical findings of IM.

Characterization of eosinophilic hyaline droplets in schwannoma.

In schwannoma, degenerative structures, such as bizarre hyperchromatic nuclei, lipofuscin deposition, hemorrhage, edema, etc., are frequently encountered and are regarded as hallmarks of the benign nature of the neoplasm. Hyaline globules or eosinophilic hyaline droplets (EHDs) have been observed in a large variety of tumors, but they are rare histological manifestations of schwannoma, and the details have not been described as yet.

Differential labeling of the pinealocytes and pineal interstitial cells by a series of monoclonal antibodies to human pineal body.

Ten hybridomas producing monoclonal antibodies against pineal antigens were established by hybridizing mouse myeloma cells with spleen cells from BALB/c mice immunized with human pineal body homogenate. Seven antibodies immunohistochemically reacted with the pinealocytes and three reacted with the pineal interstitial cells. According to the antibodies applied, the pinealocytes were immunostained in a variable manner; granularly with PP1, PP4 and PP6 antibodies, diffusely with PP2 and PP5, membraneously with PP3, and apically with PP7.