Black staining

Fig. 17.2. (Opposite) Immuno-gold localization of a T. muris-derived IFN-y homologue to the bacillary band and cuticular pore. (A) Transmission electron micrograph of bacillary band showing the pore chamber (PC), pore aperture (PA) and lamellar apparatus (LA) (x22,000). (B) High-power localization of antibody staining (black dots) to the lamellar apparatus (LA) and pore chamber (PC) (x36,000). (Courtesy ofF. Bughdadi.)...

Gelatinized starch appears as a swollen globular mass that does not stain black. 

Figure 2 Digital image from an ethylene-vinyl acetate/lysozyme chloride drug delivery system. The pore space has been opened, the polymer stained light gray, and residual protein stained black.

This qualitative test is also referred to as Harrison s test since he was the first to describe it in 1912. The test specimen is either boiled or padded with a reagent containing a mixture of silver nitrate (1%), sodium thiosulphate (4%) and sodium hydroxide (4%) and then steamed. Those parts where degradation takes place due to oxycellulose or hydrocellulose in a fabric will be stained black or dark grey due to the formation of silver by reduction. 

Uses Pigment for stains, black Japans, dull black finishes Regulatory FDA GRAS... 

Unsaturated rubbers in sections can be selectively stained black with osmium tetroxide. 

Figure 8.4 Transmission electron micrographs of HIPS showing the styrene dispersed within the butadiene phase that is in turn dispersed within the styrene phase. The isoprene phase is stained black.

Figure 21.12. Mineralized polysaccharide (alginate-chitosan) nanocapsules A) TEM of nanocapsules with alginate stained black/dark grey surrounded by a lighter grey chitosan outer shell B) XRD analysis of a representative nanocapsule shows that calcium and phosphate ions are concentrated on capsules and therefore indicates the formation of a calcium phosphate outer shell. This provides evidence that alginate-chitosan capsules have been formed.

Fig. 17. Ventricular myocardium of a pig on a vitamin Bi-deficient diet for 246 days. Fibrous scar tissue (stained black) is apparent.

Potassium Permanganate, saturated 2 days 3.27 1.39 Stained black... 

Oiagraph-Bradieys Stencil 2 months -449 3.45 Stained black... 

Fig. 65. Diagram showing progressive incorporation of -uridine into RNA on the giant loop of chromosome No. 32 of Triturus cristatus. -labeled granules are stained black, a) Before injection of triton with -uridine b) 1 day after injection c) 2 days d) 4 days e) 7 days f) 14 days after injection (Callan, 1963).

In Figure 5 an electron micrograph of a midrange PEA (butadiene doped)/PS incompatible IPN composition is compared with a commercial graft-type polyblend, HiPS, supplied by Monsanto Company, Springfield, Mass. HiPS contains polybutadiene (stained black with osmium tetroxide) dispersed in PS. 

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