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Photo: Verena K Affolter

Verena K Affolter- DVM, PhD
Professor of Clinical
Pathology, Microbiology & Immunology

3313 Vet Med 3A
Davis, CA 95616


Research Focus

Dermatopathology/Immunopathology: Structure and function of the leukocytic components of the skin immune system; Histiocytic proliferative diseases in dogs and cats; Lymphocytic proliferative diseases of the skin; Immune-mediated skin diseases, including vasculitis; Ischemic dermatopathy in dogs; Progressive lymphedema and associated pastern dermatitis in draft horses

Specialty Focus

Anatomic Pathology, Dermatopathology


1982 Veterinary School , University Berne, Berne, Switzerland
1984 Doctoral Thesis , University Bern, Switzerland
1990 Anatomic pathology training , University Bern, Switzerland , Cornell University, Ithaca NY, USA
1999 PhD Comparative pathology, University of California Davis, Dept. of Pathology, Microbiology, Immunology, Davis
1999 Graduate School , University California Davis, Department of Pathology, Microbology, Immunology

Honors and Awards

1992 Swiss National Foundation; Fellowship for studies on canine histiocytic diseases


Staatsexamen der Veterinärmedizin (final exams and graduation as veterinarian)
Doctoral thesis, Dr. Med.Vet.
FVH Pathology (Specialization in Veterinary Pathology), Switzerland
Diplomate of European College of Veterinary Pathology (ECVP)
PhD Comparative Pathology

Active Research Grants

Co-Principal Investigator, Evaluation of antibodies against SOX-10, periaxin and GAP-43 as potential diagnostic tools for canine peripheral nerve sheath tumors: an immunohistochemical pilot study, HigginsR. (Principal Investigator), CCAH

Principal Investigator, “Identification of occult lymph node metastasis from canine carcinomas” , M Steffey (Principal Investigator), CCAH

Co-Investigator, Characterization of genetic of CPL in Friesian horses, Bannasch D (Principal Investigator), CEH

Co-Principal Investigator, Diagnostic utility of CD204, CD163, and Iba1 in canine articular histiocytic sarcoma and synovial cell sarcoma, Moore PF (Principal Investigator), CCAH

Most Recent 10 Publications

  • Link Icon 2014 Larsen JA, Outerbridge CA, Fascetti AJ, Affolter VK Skin lesions associated with lysine deficiency in kittens are characterized by inflammation J Appl Res Vet Med,
  • Link Icon 2014 Zhou D, Luff J, Usuda Y, Affolter V, Moore P, Schlegel R, Yuan H Complete genome sequence of canine papillomavirus type 11. Genome announcements,
  • Link Icon 2013 Hoolahan DE, White SD, Outerbridge CA, Shearer PL, Affolter VK Equine alopecia areata: a retrospective clinical descriptive study at the University of California, Davis (1980-2011). Vet Dermatol,
  • Link Icon 2013 Gandolfi B, Alhaddad H, Affolter VK, Brockman J, Haggstrom J, Joslin SE, Koehne AL, Mullikin JC, Outerbridge CA, Warren WC, Lyons LA To the Root of the Curl: A Signature of a Recent Selective Sweep Identifies a Mutation That Defines the Cornish Rex Cat Breed. PloS one,
  • Link Icon 2013 Goodnight AL, Traslavina RP, Emanuelson K, Affolter VK, Gaffney PM, Vernau W, Williams C, Wu CI, Sturges BK, Lowenstine LJ Squamous cell carcinoma of the anal sac in a spotted hyena (Crocuta crocuta). J Zoo Wildl Med,
  • Link Icon 2013 Moore PF, Affolter VK, Keller SM Canine inflamed nonepitheliotropic cutaneous T-cell lymphoma: a diagnostic conundrum. Vet Dermatol,
  • Link Icon 2013 Winfield LD, White SD, Affolter VK, Renier AC, Dawson D, Olivry T, Outerbridge CA, Wang YH, Iyori K, Nishifuji K Pemphigus vulgaris in a Welsh pony stallion: case report and demonstration of antidesmoglein autoantibodies. Vet Dermatol,
  • Link Icon 2013 Doerr KA, Outerbridge CA, White SD, Kass PH, Shiraki R, Lam AT, Affolter VK Calcinosis cutis in dogs: histopathological and clinical analysis of 46 cases. Vet Dermatol,
  • Link Icon 2013 Traslavina RP, Aleman M, Affolter VK, LeCouteur RA, Ramsamooj R, Higgins RJ Pathology in practice. Spinal cord (ectopic) nephroblastoma in a dog. J Am Vet Med Assoc,
  • Link Icon 2012 Leonard BC, Affolter VK, Bevins CL Antimicrobial peptides: agents of border protection for companion animals Vet Dermatol,

Most Recent 5 Book Chapters

2014 Affolter VK: Chronic Progressive Lymphedema in Draft Horses, NE Robinson, KA Sprayberry, (ed), In: Current Therapy in Equine Medicine. .

2011 Affolter VK, Borchers A: Hauterkrankungen, Fey K, Kolm G, (ed), Fohlenmedizin, Stuttgart, Germany. 254-269.

2010 Moore PF, Affolter VK: Histiocytic proliferative diseases in dogs and cats, Ettinger SJ, Feldmann EC, (ed), Textbook of Veterinary Internal Medicine, St. Louis, Missouri. 2202-2207.

2008 Affolter VK, Outerbridge CA: Vasculitis, Prelaud P, Gaguere E, Craig, M, (ed), A practical guide to canine dermatology. 311-319.

2008 Affolter VK, Moore PF: Histiocytic Proliferative disorders, Prelaud P, Gaguere E, Craig M, (ed), A practical guide to canine dermatology. 471-480.