Basal cell carcinoma (BCC) is a malignant tumor of epithelial cells that is composed of cells similar to those in the basal area of the epidermis and its appendages. Ninety- five percent of individuals with BCC are between 40 and 79 years old. It rarely occurs in younger individuals. Herein, a 20- year- old woman with type III skin, who had a BCC on her chin is presented. Since the clinic...

The genus Desmodium is represented in Santa Catarina State, Brazil, by 13 species, all with lomen- taceous fruits. Shape, size and isthmus margin of loments vary, while the surface is glabrous, or covered by trichomes of different types. Morphological diversity of trichomes becomes particularly relevant to taxonomic description. The trichome types present on the surface of Desmodium fruits prov...

Conidial development of Cordyceps militaris was observed from germinating ascospores and vegetative hyphae through light and scanning electron microscopy (SEM). Ascospores were discharged from fresh specimens of C. militaris in sterile water as well as Sabouraud Dextrose agar plus Yeast Extract (SDAY) plates. We observed ascospore germination and conidial formation periodically. Under submerged...

Background and aim: The stroma of basal cell carcinoma (BCC) is rich in mast cells. Morpheaform BCC has been reported to contain much more mast cells than the other types of BCC, but their significance remains unknown. In this study we investigated the significance of mast cells related to BCC and possible relationship between increased number of mast cells and clinical and histological p...

A new ascomycete species, Natipusilla bellaspora, collected from submerged woody debris in a freshwater stream at Los Amigos Biological Station, Madre De Dios in the Peruvian Amazon is described and illustrated. This fungus is characterized by small, globose to subglobose, hyaline ascomata; small, globose to subglobose, eight-spored fissitunicate asci; one-septate, multiguttulate ascospores wit...

background: keratinocyte stem cell is one of the adult stem cells that inhabits the skin and contributes to skin function and renewal. adult stem cells are best defined by their capacity to self-renew, and to maintain tissue function for a long period of time. these findings indicate the importance of these cells for clinical applications including regenerative medicine, tissue engineering and ...

Background: Keratinocyte stem cell is one of the adult stem cells that inhabits the skin and contributes to skin function and renewal. Adult stem cells are best defined by their capacity to self-renew, and to maintain tissue function for a long period of time. These findings indicate the importance of these cells for clinical applications including regenerative medicine, tissue engineering and ...

We derive a continuum mechanical model to capture the morphological changes occurring at pretumoral stage of epithelial tissues. The proposed aims investigate competition between bulk elasticity epithelium and surface tensions apical basal sides. According this model, when apico-basal tension imbalance reaches critical value, subcritical bifurcation is triggered attains its physiological folded...