1. Department of Veterinary and Biomedical Sciences, Center for Molecular Immunology and Infectious Disease, Pennsylvania State University, University Park, PA 16802, USA.
2. Department of Microbiology, Immunology and Molecular Genetics, University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA.
3. Division of Pneumoconiosis, School of Public Health, China Medical University, Shenyang 110122, China.
4. Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA.
5. Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA.
6. Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA.
7. Department of Pathology, University of Massachusetts Medical School, Albert Sherman Center, Worcester, MA 01605, USA.
8. Division of Dermatology and Cutaneous Surgery, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.