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 (sĕf′ə-lĭn) also keph·a·lin (kĕf′-)
Any of a group of phospholipids found especially in the white matter of the brain and spinal cord.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈsɛfəlɪn; ˈkɛf-) or


(Biochemistry) a phospholipid, similar to lecithin, that occurs in the nerve tissue and brain. Systematic name: phosphatidylethanolamine
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsɛf ə lɪn)

a phospholipid of the cell membrane, abundant esp. in the brain.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
BE: base excess; Sa[O.sub.2]: arterial oxygen saturation; TP: prothrombin time; TCA: acclotine cephalin time Table 4.
A full blood count with platelet counts, prothrombin time, kaolin cephalin clotting time, C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), and HIV serology was done.
The results of the laboratory tests showed WBC 24.43 G/l; RBC 3.74 T/l; HGB 12.2 g/dl; HCT 35.3%; PLT 212 G/l; Na 131.0 mmol/l; K 4.62 mmol/l; CRP 489.7 mg/l; fibrinogen 960 mg/dl; procalcitonin 8.91 ng/ml; prothrombin time 13.3 sec.; Quick's index 100%; INR 1.00; kaolin cephalin time 36.3 sec.
Methods of characterizing the overall activity of the blood coagulation: a method of recording the whole blood coagulation on coagulation analyzer - H-334; whole blood clotting time in a siliconized and non-siliconized dish; plasma coagulability time; kaolin time plasma; kaolin cephalin clotting time; plasma tolerance to heparin (PTH); anticoagulation test (ACT).
100 [micro]L plasma was mixed with 50 [micro]L of cephalin in a process plate, and the coagulation was started by the addition of Ca[Cl.sub.2] (1mM), 100 [micro]L of thromboplastin, and 100 [micro]L of bovine thrombin into the 100 [micro]L of incubated plasma for PT assay.
Methods to assess thrombin generation from its precursor prothrombin were developed in the early 1950s, when McFarlane and Biggs triggered coagulation in whole blood or plasma by adding calcium chloride with or without tissue factor or cephalin (3).
In mammalian and non mammalian spermatozoa, there are natural fatty acids, cholesterol, phospholipids (mainly lecithin, cephalin and sphingomielin) and glycolipids.
The kaolin cephalin time was 58 s (control 34 s), and the prothrombin rate was 42%.
In coagulation testing, cephalin, a phospholipid extract from brain tissue, is used to substitute for the platelet membrane.