BACKGROUND Fine needle aspiration cytology (FNAC) is a reliable and reproducible diagnostic technique for thyroid lesions with certain limitations. Computed morphometric methods have been introduced with a view to improve the diagnostic yield of thyroid aspirates. However, a review of the existing literature revealed conflicting reports regarding morphometric parameters in thyroid neoplasms. ...

The nematode Angiostrongylus cantonensis is a zoonotic pathogen and the etiological agent of human angiostrongyliasis or rat lungworm disease. Hawai'i, particularly east Hawai'i Island, is the epicenter for angiostrongyliasis in the USA. Rats (Rattus spp.) are the definitive hosts while gastropods are intermediate hosts. The main objective of this study was to collect adult A. cantonensis from ...

Laboratory managers and researchers generally agree that having more accuracy and consistency in color rendition could assist in achieving improved evaluation of results. However, color management has seemed so complex and elusive that many scientists and medical professionals have given up on achieving it. Transmitted-light bright-field microscope images have an enormous number of variables ou...

By M. H. F. WILKINS, M.A., PH.D. AND S. DE CARVALHO, M.D. H EME COMPOUNDS have relatively sharp absorption bands ins the visible spectrum w’hich have beers much used to identify heme enzymes ins tissue sections, e.g. the classical work of Keilins.tm These bands are, however, not sufficiently strong for consvensienst estimations of the small amounts of heme in a single cell. The Soret band, at t...

is the winner of the second prize in the recent Olympus–Current Biology photomicrography competition. The retina has been flat-mounted and stained by indirect immunofluorescence to reveal astrocytes (green) and blood vessels (orange/yellow) that are tightly associated with each other, forming a fine network over the retinal surface. Astrocytes (a type of glial cell) are critical for the develop...

Movie-goers have always looked to France for slick, beautifully photographed drama, but in general the stars are human. The movie Microcosmos, from which the images above are taken, has a cast almost entirely made up of insects. Entomologists Claude Nuridsany and Marie Perennou made the movie in an attempt to bring their research to a wider audience. They've achieved that beyond the wildest dre...