Porcine corneas were frozen with Me2SO, glycerol, 1,2-propanediol and PEG-400. The effects of the range of concentrations (5% and 10%) and temperature regimen (1oC/min and 5oC/min) were investigated. The integrity of corneal endothelial cells was evaluated by scanning electron microscopy and trypan blue staining. The presence of 5–10% PEG-400 in the protective medium was the most effective in m...

Report of a complication related to the use of 0.1% trypan blue during capsular staining of the anterior crystalline lens capsule in an extracapsular cataract extraction with intraocular lens implantation. The capsular dye was injected using an air-bubble technique, inadvertently, it was done using high pressure dispersing the dye through the zonules leading to a complete lost of red reflex, th...

Trypan blue injected intravenously is bound almost at once by the intercellular connective tissue elements all over the body,-by collagen, reticulin, and elastic fibers. This union of dye and tissue elements is the factor responsible for the early macroscopic blue color and is antecedent to cellular colloidopexic action. Different examples of connective tissue differ among themselves in their a...

Background: Evaluation of cell viability is momentous in pharmacologic and oncological research. Cell viability evaluation determines cell sensitivity and consequently treatment outcome. Various methods are available to determine cell survival. Each of these methods evaluates different endpoints. Accordingly, determining the correlation between these methods is important. In this study, in orde...

One of the traditional methods of cell viability analysis is the use of trypan blue dye exclusion staining. This technique has been the standard methodology used in academic research laboratories and industrial biotechnology plants. Cells were routinely counted manually with a hemocytometer. In recent years, modern automated instrumentation has been introduced to supplement this traditional tec...

The primo vascular system (PVS), floating in lymph ducts, was too transparent to be observed by using a stereomicroscope. It was only detectable with the aid of staining dyes, for instance, Alcian blue, which was injected into the lymph nodes. Some dyes were absorbed preferentially by the PVS than the lymph wall. It remains a standing problem to know what dyes are absorbed better by the PVS tha...

Rapid separation of avian heterophils from anticoagulated whole blood was achieved using Ficoll-Hypaque discontinuous gradients. An average of 14.4% of blood heterophils was harvested with a mean purity exceeding 99%. Heterophil viability, as determined by trypan blue dye exclusion, averaged 99.8%. The integrity of isolated heterophils was evaluated by cytochemical staining and ultrastructural ...

Abstract Background Our present study aimed to evaluate the effect of calcium phosphate nanoparticles in chlorohexidine paste on odontogenic differentiation human dental pulp stem cells. The cells (HDPSCs) were examined for viability and proliferation via trypan blue stain test MTT assay. This was followed by evaluating alkaline phosphatase assay detecting Dentin matrix protein (DMP-1) marker i...

In tissue bank, one of the key steps in corneal grafts sorting is analysis deepest cell layer cornea, endothelium. This consists counting density living cells using trypan blue staining. However, this dye toxic and measurement localized. Then no information given on cell’s viability entire layer. preliminary study proposes to track kinetics variation scattered light during deturgescence process...