of plant or animal cells. many biological structures, such as skin, eyes, fur and hair contain pigments (such as melanin). animal skin coloration is often achieved with specialized cells called chromatophores, which in animals such as the octopus and chameleon can be controlled to vary the animal's...
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. in fire assay, magnesite cupels can be used for cupellation as the magnesite cupel will resist the high temperatures involved. dead burned magnesite is selected from natural magnesite, it is produced by mine-selecting, purifying, calcining in shaft kilns. it is an ideal material for unshaped refractory...
production quality control and quality assurance contaminants methodology and analyses nutrient analysis usage / destination aquaculture land animal feeding global food security omega-3 fatty acids benefits of marine ingredients codex codex standard for fish oil codex nutrient reference value for epa...