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TSM OFFICERS 2006-2007 President: JOANNE T. ELLZEY Department <strong>of</strong> Biological Sciences University <strong>of</strong> <strong>Texas</strong> at El Paso El Paso, <strong>Texas</strong> 79968-0519 (915) 747-6880 E-mail: jellzey@utep.edu President-elect: ERNEST F. COUCH Department <strong>of</strong> Biology <strong>Texas</strong> Christian University Fort Worth, <strong>Texas</strong> 76129 (817) 257-7165 FAX (817) 257-6177 E-mail: e.couch@tcu.edu Past President: SANDRA WESTMORELAND Department <strong>of</strong> Biology University <strong>of</strong> <strong>Texas</strong> at Arlington Arlington, <strong>Texas</strong> 76019-0498 (817) 272-1513 E-mail: slwestmoreland@uta.edu Secretary: TINA HALUPNIK 5917 Inks Lake Drive Arlington, <strong>Texas</strong> 76018 (817) 468-0325 fishstix@comcast.net Treasurer (Interim appointment): ROBERT DROLESKEY USDA/ARS/SPARC 2881 F&B Rd., College Station, <strong>Texas</strong> 77845 (979) 260-9316 FAX (979) 260-9332 E-mail: droleskey@ffsru.tamu.edu Treasurer-elect: E. ANN ELLIS <strong>Microscopy</strong> and Imaging Center <strong>Texas</strong> A&M University College Station, <strong>Texas</strong> 77843-2257 (979) 845-1129 E-mail: ellisa@mic.tamu.edu Program Chairman: JODI ROEPSCH Electronic Systems Raytheon Network Centric Systems 2501 W. University, McKinney, <strong>Texas</strong> 75071 E-mail: j-roepsch2@raytheon.com Program Chairman-elect: PHOEBE J. DOSS Alcon Research, LTD. 6201 South Freeway Fort Worth, TX 76134-2099 (817) 568-6090 E-mail: phoebe.doss@alconlabs.com APPOINTED OFFICERS Corporate Member Representative: GERMAN NEAL Carl Zeiss SMT, Inc. 2800 Primwood Path Cedar Park, <strong>Texas</strong> 78613 (512) 249-6296 FAX (512) 249-6406 E-mail: neal@smt.zeiss.com Student Representative: VIBHU BAKSHI Department <strong>of</strong> Biology University <strong>of</strong> North <strong>Texas</strong>, Denton, <strong>Texas</strong> 76201 E-mail: vibhubakshi@hotmail.com TSM <strong>Journal</strong> Editor: CAMELIA G.-A. MAIER Department <strong>of</strong> Biology <strong>Texas</strong> Woman’s University, Denton, <strong>Texas</strong> 76204-5799 (940) 898-2358 FAX (940) 898-2382 E-mail: cmaier@twu.edu TSM Web Page Master: BECKY HOLDFORD <strong>Texas</strong> Instruments Inc. 13536 North Central <strong>Texas</strong> Expressway, MS 940, Dallas, <strong>Texas</strong> 75243 (972) 995-2360 E-mail: r-hold<strong>for</strong>d@ti.com Contents TEXAS JOURNAL OF MICROSCOPY VOLUME 37, NUMBER 2, 2006 ISSN 0196-5662 Camelia G.-A. Maier, Editor Department <strong>of</strong> Biology, <strong>Texas</strong> Woman’s University, Denton, TX 76204 Official <strong>Journal</strong> <strong>of</strong> the <strong>Texas</strong> <strong>Society</strong> <strong>for</strong> <strong>Microscopy</strong> “TSM - Embracing all <strong>for</strong>ms <strong>of</strong> microscopy” www.texasmicroscopy.org TSM e President’s Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 In Memoriam: Richard Ross Rebert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Research Article: Effects <strong>of</strong> Arsenic Toxicity at the Cellular Level: A Review Jaime B. Vigo and Joanne T. Ellzey. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Application <strong>for</strong> Membership <strong>Texas</strong> <strong>Society</strong> <strong>for</strong> <strong>Microscopy</strong>. . . . . . . . . . . . . . . . . . . . 51 Fall 2006 Meeting Abstracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Short Communication Frost Rings in Timber Cores from Spring House, Mesa Verde, Colorado Howard J. Arnott and Rex Adams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Cystoliths and Nebencystilithen (Secondary Cystoliths) in White Mulberry (Morus Alba L., Moraceae) Howard J. Arnott and Camelia G.-A. Maier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 GaAs MMIC Resistor Deposition and Modification Via FIB Milton Tam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Answer to “What Is It?” from Tex. J. Micros. 37:1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Anniversary Article (continued from Vol. 37:1) Howard J. Arnott: Autobiography – Part Three Howard J. Arnott . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Corporate Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Editorial Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Advertiser’s Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 ON THE COVER Holothurian sclerites are small bone ossicles located in the skin <strong>of</strong> sea cucumbers. The ones on the cover are fossilized <strong>of</strong> approximately 300,000,000 years. The morphology <strong>of</strong> sclerites is used by taxonomists to identify various species <strong>of</strong> sea cucumbers. See also current abstract entitled ‘Middle Permian Holothurian Sclerites from The Guadalupe Mountains, West <strong>Texas</strong>’ by G. P. NESTELL 1 , M. K. NESTELL 1 , and M. GRACEY 2 , 1 Department <strong>of</strong> Earth and Environmental Science and 2 Department <strong>of</strong> Biology, University <strong>of</strong> <strong>Texas</strong> at Arlington, Arlington, TX 76019. Plate prepared by Martha Gracey. Tex. J. Micros. 37:2, 2006 39