• Infectious diseases and host-pathogen interactions
• Pulmonary pathology and respiratory diseases
• Tick-borne pathogens such as Ehrlichia and Anaplasma spp. associated diseases and immunopathology
• Diagnostic pathology and the development of diagnostic tools

• 2024, PhD, Molecular Cellular and Developmental Biology, The Ohio State University
• 2019, Anatomic Pathology Residency, Center for Veterinary Health Sciences, Oklahoma State University
• 2014, MS, Molecular and Comparative Pathobiology, National Taiwan University
• 2012, DVM, School of Veterinary Medicine, National Taiwan University

• 2022-2024, Locum Pathologist, Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University
• 2015-2016, Research Assistant, Animal Drugs Inspection Branch, Animal Health Research Institute, Council of Agriculture, Executive Yuan, Miao-Li County, Taiwan
• 2012-2014, Research Assistant, Laboratory Animal Medicine Diagnostic Laboratory, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan

• Zhang T, Chien RC, Budachetri K, Lin M, Boyaka P, Huang W, Rikihisa Y (2024) Ehrlichia effector TRP120 manipulates bacteremia to facilitate tick acquisition. mBio, Mar 19:e0047624.
• Chien RC, Lin M, Yan Q, Randolph N, Huang W, Wellman M, Toribio R, and Rikihisa Y (2023) Strains of Anaplasma phagocytophilum from horses in Ohio are related to isolates from humans in the northeastern USA. Microbiol Spectr, Oct 26:e0263223.
• Budachetri K, Lin M, Chien RC, Zhang W, Brock GN, and Rikihisa Y (2022) Efficacy and Immune Correlates of OMP-1B and VirB2-4 Vaccines for Protection of Dogs from Tick Transmission of Ehrlichia chaffeensis. mBio, Nov 7;13(6):e0214022.
• Budachetri K, Lin M, Yan Q, Chien RC, Hostnik LD, Haanen G, Leclère M, Waybright W, Baird JD, Arroyo LG, and Rikihisa Y (2022) Real-Time PCR Differential Detection of Neorickettsia findlayensis and N. risticii in Cases of Potomac Horse Fever. J Clin Microbiol, Jul 20;60(7):e0025022.
• Chien RC, Sorensen NJ, Payton ME, and Confer AW (2022) Comparative Histopathology of Bovine Acute Interstitial Pneumonia and Bovine Respiratory Syncytial Virus-Associated Interstitial Pneumonia. J Comp Pathol, 192, 23-32.
• Chien RC and Ritchey JW (2020) Pathology in Practice. J Am Vet Med Assoc, 256(9), 995-998.
• Rostad SJ, Brandao J, Ramachandran A, Chien RC, and Confer AW. (2019) Austwickiosis in Captive African Spurred Tortoises (Geochelone sulcata) Co-infected with Cryptosporidium ducismarci. J Comp Pathol, 173, 1-7.
• Chien RC, Telford CR, Roy S, Ali IKM, Shieh W-J, and Confer AW (2018) Canine amoebic meningoencephalitis due to Balamuthia mandrillaris. Veterinary Parasitology: Regional Studies and Reports, 13, 156-159.

Continuing Education Publications

• Chien R. Multicentric Lymphoma in a cow. OADDL E-News. Summer 2019, Vol. 22, pg. 1. 
• Bailey K, Chien R and Ramachandran A. Goat Abortion Due to Listeriosis. OADDL E-News.
  Summer 2019, Vol. 22, pg. 4.
• Chien R. Histophilus somni Infection in cattle. OADDL E-News. Spring 2019, Vol. 21, pg. 1.
• Chien R, Confer A and Allen K. Hepatozoonosis in an Oklahoma Dog. OADDL E-News. Summer 2018, Vol. 17, pg. 1.
• Chien R. Ethylene Glycol Toxicosis in a Cat. OADDL E-News. Winter 2018, Vol. 15, pg. 2.
• Chien R and Nagamori Y. Liver Fluke Infestation in an Oklahoma Beef Herd. OADDL E-News.
  Spring 2017, Vol. 12, pg. 1.
• Chien R and Confer A. Amoebic meningoencephalitis in a dog. OADDL E-News. Spring 2017, Vol.
  12, pg. 2.

• 3-Minute Thesis Competition (Second Place), Graduate School of The Ohio State University, 2023 
• C.L. Davis and S.W. Thompson Foundation Scholarship Award in Veterinary Pathology (Oklahoma State University), 2019

• American College of Veterinary Pathologists 
• American Society for Rickettsiology