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n.1.(Optics) A concave metallic mirror attached to the object-glass end of a microscope, to throw down light on opaque objects; a reflector.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Las aves se infectan al ingerir ooquistes del suelo, que invaden su intestino como ooquistes, especialmente en las criptas de Lieberkuhn. Los signos clinicos dependen de la cantidad de ooquistes ingeridos, asi como del estado de salud de las aves, que en los casos severos pueden morir (12, 16, 17).
Copeland et al, (2015a) added Ephydatia muelleri (Lieberkuhn, 1856) to ihe list of sponges from eastern Tennessee.
In the control group (Figures 7(a) and 7(b)), a regular arrangement of cells was observed showing normal muscularis externa, submucosa, mucosa, lamina propria, and crypts of Lieberkuhn. In DMH control group (Figures 7(c) and 7(d)), there is a hyperproliferation of cells with submucosa and mucosa being damaged.
In the adult intestine, epithelial stem/progenitor cells located in the niche of the crypts of Lieberkuhn are intestinal stem cells.
3 se pueden observar las microvellosidades del ciego, donde se pueden observar criptas de Lieberkuhn profundas (flecha completa) y microvellosidades alargadas (punta de flecha) y relativamente finas, que presentaron los animales controles de los tres tipos geneticos.
(18) The genre was revived in Moravian circles of the eighteenth century by Count Nikolaus Ludwig von Zinzendorf and Samuel Lieberkuhn and found use in translation in several missionary locales.
The colorectal mucosa contains large numbers of pockets known as the crypts of Lieberkuhn. Epithelial renewal occurs in these crypts through a coordinated series of events involving proliferation, differentiation, and migration toward the intestinal lumen.
The part between the two large intestinal villi matchs to the crypts of Lieberkuhn. The villi that also appear in the large intestine during the development disappear as the villus tips thicken (9).
Kanter and Akpolat (2008) reported that Lieberkuhn gland counts have diminished, as well as losses in gland cells and especially total losses in the criptae.
Intestinal epithelia are organized into finger-like protrusions called villi, absent in the colon, and invaginations called crypts of Lieberkuhn (short: crypts).