The interaction of Toluidine blue with Sodium Alginate has been investigated by spectrophotometric method. The polymer induces metachromasy in the dye as evidenced from the considerable blue shift in the absorption maxima of the dye. The interaction constant and thermodynamic parameters of polymer-dye interaction have been determined. The effect of alcohols on the reversal of metachromasy has b...

Indole-3-acetic acid (plant auxin) has low toxicity but dramatically enhances the killing of mammalian cells on illuminating phenothiazinium dyes with red light. Suitable dyes include toluidine blue, used in cancer diagnosis because of localization in tumors, and methylene blue, used in experimental photodynamic therapy of cancer. The photosensitized oxidation of indole acetic acid forms a free...

PREFACE The Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65, California Health and Safety Code 25249.5 et seq.) requires that the Governor cause to be published a list of those chemicals " known to the state " to cause cancer or reproductive toxicity. The Act specifies that " a chemical is known to the state to cause cancer or reproductive toxicity...if in the opinion of t...

background: the aim of this study was to quantify the number of mast cells in focal reactive hyperplastic lesions of the oral cavity and to compare these two number of mast cells in normal gingival tissues and to correlate their presence with the state of connective tissue changes in reactive lesions and probably suggest a role for mast cells in these lesions. materials and methods: patient rec...

Mucinous nevus is a very rare entity and can be classified as both a cutaneous mucinosis and a connective tissue nevus. We describe the clinicopathologic features of an unusual case of mucinous nevus in a 9-year-old Taiwanese boy who presented with multiple grouped flesh-colored nodules with band-like distribution on his right thigh since birth. Histopathological examination of the skin lesion ...

We describe the case of a patient with carotico-cavernous fistula who had botulinum toxin A to induce a protective ptosis 4.5 days before death. The levator palpebrae superioris muscle from both sides and the superior rectus muscle from the injected side were obtained for examination. The preserved samples were stained with haematoxylin and eosin, Martius scarlet blue, Glees, S100, dehydrogenas...

Background The solid and colloidal particles in the range of 1-100 nm are called nanoparticles. Recently, one of the most important metal nanoparticles, with wide usage is gold nanoparticle. Based on the previous studies, gold nanoparticles have spermatotoxic effects and can destroy sperm motility. The aim of present study is the effect of gold nanoparticles on chromatin quality and sperm param...

Indole-3-acetic acid (plant auxin) has low toxicity but dramatically enhances the killing of mammalian cells on illuminating phenothiazinium dyes with red light. Suitable dyes include toluidine blue, used in cancer diagnosis because of localization in tumors, and methylene blue, used in experimental photodynamic therapy of cancer. The photosensitized oxidation of indole acetic acid forms a free...