| malarial pigment stain | <technique> A stain using phloxine-toluidine blue O sequence; malarial pigment and nuclei are bluish, erythrocytes and cytoplasm are red to orange; found in phagocytic cells of the reticuloendothelial system. (05 Mar 2000) |
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| Maldonado-San Jose stain | <technique> A staining method for staining pancreatic islet cells, using a phloxine-azure B-haematoxylin sequence; alpha cells are purple, beta cells are violet-blue, delta cells are light blue, and exocrine cells are grayish blue with red secretion granules. (05 Mar 2000) |
| panoptic stain | <technique> A stain in which a Romanowsky-type stain is combined with another stain; such a combination improves the staining of cytoplasmic granules and other bodies. (05 Mar 2000) |
| Mallory's aniline blue stain | <technique> A method especially suitable for studying connective tissue; sections are stained in acid fuchsin, aniline blue-orange G solution, and phosphotungstic acid; fibrils of collagen are blue, fibroglia, neuroglia, and muscle fibres are red, and fibrils of elastin are pink or yellow. Synonym: Mallory's aniline blue stain, Mallory's triple stain. (05 Mar 2000) |
| Mallory's collagen stain | <technique> One of a number of staining methods using phosphomolybdic or phosphotungstic acid with an acid stain, such as aniline blue, or with haematoxylin for connective tissue staining. (05 Mar 2000) |
| Mallory's iodine stain | <technique> Amyloid appears red-brown after Gram's iodine, then violet and blue after flooding with dilute sulfuric acid. (05 Mar 2000) |
| Mallory's phloxine stain | <technique> A technique based on retention of phloxine by hyaline after overstaining and then decolorizing with lithium carbonate, used in combination with alum haematoxylin to give nuclear staining; hyaline appears red, older hyaline is pink to colourless, amyloid is pale pink, and nuclei are blue-black. (05 Mar 2000) |
| Mallory's phosphotungstic acid haematoxylin stain | A stain with broad application in cytology and histology; nuclei, mitochrondria, fibrin, neuroglial fibrils, and cross-striations of skeletal and cardiac muscle stain blue; cartilage ground substance, bone reticulum, and elastin appear in shades of yellow-orange and brownish red; also useful for demonstrating abnormal or diseased astrocytes, often in combination with periodic acid-Schiff stain and Luxol fast blue. Synonym: Mallory's phosphotungstic acid haematoxylin stain. (05 Mar 2000) |
| Mallory's stain | <technique> For actinomyces, a stain using alum haematoxylin, followed by eosin; immersion in Ehrlich's aniline crystal violet stain, and Weigert's iodine solution; mycelia stain blue and clubs stain red. For haemofuchsin, sections are stained sequentially in alum haematoxylin and basic fuchsin; the lipofuchsin-like pigment and ceroid stain bright red, nuclei stain blue, while melanin and haemosiderin appear unstained in their natural browns. (05 Mar 2000) |
| Mallory's trichrome stain | <technique> A method especially suitable for studying connective tissue; sections are stained in acid fuchsin, aniline blue-orange G solution, and phosphotungstic acid; fibrils of collagen are blue, fibroglia, neuroglia, and muscle fibres are red, and fibrils of elastin are pink or yellow. Synonym: Mallory's aniline blue stain, Mallory's triple stain. (05 Mar 2000) |
| Mallory's triple stain | <technique> A method especially suitable for studying connective tissue; sections are stained in acid fuchsin, aniline blue-orange G solution, and phosphotungstic acid; fibrils of collagen are blue, fibroglia, neuroglia, and muscle fibres are red, and fibrils of elastin are pink or yellow. Synonym: Mallory's aniline blue stain, Mallory's triple stain. (05 Mar 2000) |
| Papanicolaou's stain | <technique> A complex stain for detecting malignant cells in cervical smears. Contains in separate staining stages (a) haematoxylin, (b) Orange G phosphotungstic acid c) Light green, Bismarck Brown, Eosin and phosphotungstic acid. (18 Nov 1997) |
| Papanicolaou stain | <technique> A multichromatic stain used principally on exfoliated cytologic specimens and based on aqueous haematoxylin with multiple counterstaining dyes in 95% ethyl alcohol, giving great transparency and delicacy of detail; important in cancer screening, especially of gynecologic smears. (05 Mar 2000) |
| G-banding stain | <technique> A unique chromosome staining technique, used in human cytogenetics to identify individual chromosomes, which produces characteristic bands. It utilises acetic acid fixation, air drying, denaturing chromosomes mildly with proteolytic enzymes, salts, heat, detergents, or urea, and finally Giemsa stain; chromosome bands appear similar to those fluorochromed by Q-banding stain. Synonym: Giemsa chromosome banding stain. (05 Mar 2000) |
| Pappenheim's stain | <technique> A method for differentiating tubercle and smegma bacilli; the preparation is stained with hot carbol-fuchsin solution, then treated with an alcoholic solution of rosolic acid and methylene blue to which glycerin is added; tubercle bacilli are stained bright red, but smegma bacilli are decolorised. (05 Mar 2000) |