WordNet

a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions (同)lm
a cavity or passage in a tubular organ; "the lumen of the intestine"

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Prolyl Endopeptidase (PREP) is Associated With Male Reproductive Functions and Gamete Physiology in Mice.

Dotolo R1,2, Kim JD2, Pariante P1, Minucci S1, Diano S2.
Journal of cellular physiology.J Cell Physiol.2016 Mar;231(3):551-7. doi: 10.1002/jcp.25178. Epub 2015 Sep 18.
Prolyl endopeptidase (PREP) is a serine protease which has been implicated in many biological processes, such as the maturation and degradation of peptide hormones and neuropeptides, learning and memory, cell proliferation and differentiation, and glucose metabolism. A small number of reports have a
PMID 26332268

Lumen Formation Is an Intrinsic Property of Isolated Human Pluripotent Stem Cells.

Taniguchi K1, Shao Y2, Townshend RF3, Tsai YH4, DeLong CJ3, Lopez SA3, Gayen S5, Freddo AM3, Chue DJ3, Thomas DJ3, Spence JR4, Margolis B6, Kalantry S5, Fu J2, O'Shea KS3, Gumucio DL7.
Stem cell reports.Stem Cell Reports.2015 Dec 8;5(6):954-62. doi: 10.1016/j.stemcr.2015.10.015. Epub 2015 Nov 25.
We demonstrate that dissociated human pluripotent stem cells (PSCs) are intrinsically programmed to form lumens. PSCs form two-cell cysts with a shared apical domain within 20 hr of plating; these cysts collapse to form monolayers after 5 days. Expression of pluripotency markers is maintained thro
PMID 26626176

Antithrombotic Effects of Nur77 and Nor1 Are Mediated Through Upregulating Thrombomodulin Expression in Endothelial Cells.

Yang P1, Wei X1, Zhang J1, Yi B1, Zhang GX1, Yin L1, Yang XF1, Sun J2.
Arteriosclerosis, thrombosis, and vascular biology.Arterioscler Thromb Vasc Biol.2015 Dec 3. pii: ATVBAHA.115.306891. [Epub ahead of print]
OBJECTIVE: Thrombomodulin is highly expressed on the lumenal surface of vascular endothelial cells (ECs) and possesses potent anticoagulant, antifibrinolytic, and anti-inflammatory activities in the vessel wall. However, the regulation of thrombomodulin expression in ECs remains largely unknown.APPR
PMID 26634653

Environmental pH Affects Photoautotrophic Growth of Synechocystis sp. PCC 6803 Strains Carrying Mutations in the Lumenal Proteins of PSII

SUMMERFIELD Tina C.,CRAWFORD Tim S.,YOUNG Roger D.,CHUA Jocelyn P. S.,MACDONALD Rebecca L.,SHERMAN Louis A.,EATON-RYE Julian J.
Plant and cell physiology 54(6), 859-874, 2013-06-01
NAID 10031184130