An unusual structure resembling an islet of Langerhans was described in the pancreatic ductal epithelium of a presumably normal human male. Further studies to establish the identities of both islet and duct were performed. The original hematoxylin and eosin section served for histological description, as well as for nuclear volume analysis to characterize levels of beta cell polyploidy. The sec...

Basophilic and eosinophilic tissue components are difficult to demonstrate by stains commonly used in light microscopy after osmium tetroxide fixa-tion. Baker (2) states that "if only chromatin were left in a state in which it could be differentially stained without difficulty, this fixative would be universally recognized as superior to all others" for light microscopy. The difficulty encounte...

A49 year old woman presented with a lump in her right breast, which was partially cystic, and after draining refilled immediately. A biopsy showed an infiltrating ductal carcinoma grade 3, with the additional feature of unusual cytoplasmic granules. Several courses of cytotoxic chemotherapy were administered which included adriamycin, cyclophosphamide, methotrexate, and 5 fluorouracil. Eight mo...

Peanut (Arachis hypogaea L.) cultivars are available that have high resistance to the peanut root-knot nematode [Meloidogyne arenaria (Neal) Chitwood race 1] or tomato spotted wilt, caused by tomato spotted wilt Tospovirus (TSWV); however, no cultivars exist that have resistance to both pathogens. The objective of this research was to combine resistance to both pathogens in a single genotype. D...