Correlative light and electron microscopy on the same cells of the adrenal gland of the frog, Rana nigromaculata, fixed in glutaraldehyde followed by osmium tetroxide, was done using the adjacent Epon embedded sections. Electron microscope observation revealed three different types of granule-filled secretory cells; the noradrenaline-storing cells (NA cells) filled with intensely dense and vary...

Mast cells are found close to surfaces that interface with the external environment, particularly skin, respiratory, and digestive systems. The number of mast at a given site can vary depending on host's location immunologic status. This study was undertaken determine their heterogeneity in broilers' ileum during post-hatching period. were studied tissue 0-, 7-, 21- 42-day old broilers. stained...

A Simple, rapid and sensitive method has been developed for determination of trances of tellurium (VI) (0.096-1.250 mg/mL) based on its catalytic effect on the reduction reaction of toluidine blue by sulfide ion at pH 4. The reaction is monitored spectrophotometrically by measuring the decrease in absorbance of the dyestuff at 628 nm by the fixed time method. The detection...

In this study, genital tracts of 20 healthy non-pregnant buffaloes were collected from Urmia abattoir.These genital tracts were selected based on their ovaries conditions, half of them were in follicular phase and the other half were in luteal phase. The samples were taken from anterior, middle and posterior regions of the cervix and fixed in 10% buffer formalin. Then, histological sections of ...

The primo vascular system (PVS) is being established as a circulatory system that corresponds to acupuncture meridians. There have been two critical questions in making the PVS accepted as a novel liquid flowing system. The first one was directly to show the flow of liquid in PVS and the second one was to explain why it was not observed in the conventional histological study of animal tissues. ...

BACKGROUND It has been recently observed that in implants with screw-retained abutments, in in vitro as well as in vivo conditions, bacteria can penetrate inside the internal cavity of the implant as a consequence of leakage at the implant-abutment interface. An alternative to screw-retained abutments is represented by implants that can receive cemented abutments. In this case, the abutment goe...