A group of chemical elements that are needed in minute quantities for the proper growth, development, and physiology of an organism. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Tracers (Biology) : Tracer studies using bacteriophage to predict the fate of viruses in the marine community : preliminary assessments / Bruce J. Richardson ... [and others]
Here are entered works on instruments that combine an oscilloscope with a camera to produce a permanent record of a waveform. Works on test instruments in which the variations in an electrical quantity appear temporarily as a visible waveform on the screen of a cathode ray tube are entered under Oscilloscopes
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Traces (Project) / http://id.loc.gov/authorities/names/n2015061640 : Art, anthropology, and contested heritage : ethnographies of TRACES / edited by Arnd Schneider
Trachea -- Diseases. : Great Ormond Street: A Delicate Balance - Series 2, Ep 4 of 6
2013
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Trachea -- Diseases -- Surgery. : Tracheotomy management : a multidisciplinary approach / edited by Peggy A. Seidman, Elizabeth H. Sinz, David Goldenberg
Trachea -- Surgery -- Atlases : Thoracic surgery : transplantation, tracheal resections, mediastinal tumors, extended thoracic reseactions / edited by Douglas J. Mathisen, Christopher R. Morse ; series editor, Josef E. Fischer ; illustrations by Body Scientific International, LLC., Anne Rains
2015
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Trachea -- Surgery -- Complications : Airway Care : Tracheostomy Care, Tube Change, and Artificial Airway Cuff Management. Airway Cuff Complications / [produced by MedCom, Inc.]
Cysts of one of the parts of the mediastinum: the superior part, containing the trachea, esophagus, thoracic duct and thymus organs; the inferior middle part, containing the pericardium; the inferior anterior part containing some lymph nodes; and the inferior posterior part, containing the thoracic duct and esophagus
Cysts of one of the parts of the mediastinum: the superior part, containing the trachea, esophagus, thoracic duct and thymus organs; the inferior middle part, containing the pericardium; the inferior anterior part containing some lymph nodes; and the inferior posterior part, containing the thoracic duct and esophagus