rounded-edge angle iron

half-round fillet wing

round corner square

corner radius | nose radius | rounded corner

round corners

(ii) Microscopical, — when suitably mounted and examined under the microscope, thyroid shows the following: numerous smooth to striated hyaline fragments of colloids, of angular to irregular shape, that are colourless to pale yellow in water mounts, brown in Mallory’s stain and pink in solution of eosin, some of these fragments containing granules, minute vacuoles, crystalloidal bodies and cells; numerous irregular fragments of follicular epithelium staining brown with Mallory’s stain, the individual cells more or less polygonal to rounded-angular or irregularly cuboidal, often with prominent nuclei staining dark ...[+++]blue, their cytoplasm purplish with Delafield’s solution of haematoxylin; slender glistening segments of capillaries of closely undulate outline; numerous slender segments of neuraxons; numerous aggregates of particles of intercellular substance and slender, mostly straight connective tissue fibres staining blue to greenish blue with a mixture of Mallory’s stain and solution of phosphotungstic acid, the bundles of fibres often appearing reddish in Mallory’s stain; few glistening fragments of blood vessels with serrated or crenated ends as viewed in water mounts; and

Perches should be ovoid or rectangular with smoothed corners and made of wood or plastic.

Enclosures and enrichment structures should have smooth surfaces and rounded edges to minimise the risk of injury to the amphibian's skin.

Enclosures and enclosure furniture should have smooth surfaces and rounded edges to minimise the risk of injury, and in the most sensitive species opaque materials should be used.