WordNet

one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)
having a clear mind; "a lucid moment in his madness"

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地層,岩層 / (社会的な)階層
分かりやすい,明快な(clear) / 正気の(sane) / 透き通った,透明な(transparent) / 《詩》明るい,輝いた(bright)

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/01/23 01:40:05」(JST)

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Histologic image showing a section of epidermis. Stratum lucidum labeled near center.

Section of epidermis

The stratum lucidum (Latin for "clear layer") is a thin, clear layer of dead skin cells in the epidermis named for its translucent appearance under a microscope. It is readily visible by light microscopy only in areas of thick skin, which are found on the palms of the hands and the soles of the feet.^[1]^[2]

Located between the stratum granulosum and stratum corneum layers, it is composed of three to five layers of dead, flattened keratinocytes.^[3]^[4] The keratinocytes of the stratum lucidum do not feature distinct boundaries and are filled with eleidin, an intermediate form of keratin. They are surrounded by an oily substance that is the result of the exocytosis of lamellar bodies accumulated while the keratinocytes are moving through the stratum spinosum and stratum granulosum.^{[citation needed]}

The thickness of the lucidum is controlled by the rate of mitosis (division) of the epidermal cells. In addition, melanosomes determine the darkness of the stratum lucidum.

References

^ Acute and Chronic Wounds: Current Management Concepts. Mosby Elsevier. 2007. p. 41. ISBN 978-0-323-03074-8.
^ Narayan, Roger (20 June 2009). Biomedical Materials. Springer Science & Business Media. p. 376. ISBN 978-0-387-84872-3.
^ McGrath, J.A.; Eady, R.A.; Pope, F.M. (2004). Rook's Textbook of Dermatology (Seventh Edition). Blackwell Publishing. Pages 3.8. ISBN 978-0-632-06429-8.
^ Tortora, Gerard; Derrickson, Bryan; Principles of Anatomy and Physiology (2009)152 John Wiley & Sons Inc, Hoboken, NJ ISBN 978-0-470-08471-7.

UpToDate Contents

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1. アトピー性皮膚炎（湿疹）の病因、臨床症状、および診断 pathogenesis clinical manifestations and diagnosis of atopic dermatitis eczema
2. 顆粒性不全角化 granular parakeratosis
3. 皮膚剥脱症候群 peeling skin syndrome
4. 点状角質融解症 pitted keratolysis
5. 成人における刺激性接触皮膚炎 irritant contact dermatitis in adults

English Journal

The neuron-astrocyte-microglia triad in CA3 after chronic cerebral hypoperfusion in the rat: Protective effect of dipyridamole.

Lana D1, Ugolini F2, Melani A3, Nosi D4, Pedata F5, Giovannini MG6.
Experimental gerontology.Exp Gerontol.2017 Oct 1;96:46-62. doi: 10.1016/j.exger.2017.06.006. Epub 2017 Jun 9.
PMID 28606482

Feedforward inhibition is randomly wired from individual granule cells onto CA3 pyramidal cells.

Neubrandt M1, Oláh VJ1, Brunner J1, Szabadics J1.
Hippocampus.Hippocampus.2017 Oct;27(10):1034-1039. doi: 10.1002/hipo.22763. Epub 2017 Jul 24.
PMID 28696588

Homer1a protein expression in schizophrenia, bipolar disorder, and major depression.

Leber SL1,2, Llenos IC3,4,5,6, Miller CL2, Dulay JR3,4,5, Haybaeck J1,7, Weis S8,9.
Journal of neural transmission (Vienna, Austria : 1996).J Neural Transm (Vienna).2017 Oct;124(10):1261-1273. doi: 10.1007/s00702-017-1776-x. Epub 2017 Aug 16.
PMID 28815330

Japanese Journal

湾岸工場地での「エコロジー緑化」植栽地における施工18年目の林分構造(平成10年度日本造園学会研究発表論文集(16))

中島敦司,養父志乃夫,山田宏之 [他],駒走裕之
ランドスケープ研究 : 日本造園学会誌 : journal of the Japanese Institute of Landscape Architecture 61(5), 505-510, 1998-03-30
本論では,潜在自然植生の構成種等を植栽した「エコロジー緑化」施工地での樹林の形成状況を解明するため,湾岸発電所にある施工後18年目の試験地において林分調査を行った.この結果,試験地の林分では,最上層にトウネズミモチ,ヤマモモ等の階層が形成され,地表付近では多数のシャリンバイやトウネズミモチの生育を認めた。このように,試験地では階層構造が形成されつつあり,この要因はギャップ形成の影響によると考えられ …
NAID 110004307876

Selective scarcity of NMDA receptor channel subunits in the stratum lucidum (mossy fiber-recipient layer) of the hippocampal CA3 subfield.

WATANABE M.
Eur. J. Neurosci. 10, 478-487, 1998
NAID 30014380906

ウシ皮膚表皮ランゲルハンス細胞の組織学および計量形態学的特性〔英文〕

眞鍋昇 [他],古屋良宏,東泰好,宮本元
日本畜産学会報 64(1), 1-7, 1993
… palma manus, planta pedis), most of the cell bodies were localized in the center of the stratum spinosum and had long and highly branched processes (type II, III and IV), and their processes often reached to the stratum lucidum. … fossa axillaris, regio inguinalis), the cell bodies were localized in the base of the stratum spinosum and had short processes (type I and II), and their processes ended beneath the cells of the stratum granulosum. …
NAID 130000750397