Fig. 1From: Observational cross-sectional study of Trichomonas tenax in patients with periodontal disease attending a Chilean university dental clinicDirect microscopy observation of T. tenax in patients with periodontal disease. a Representative image from a dental plaque-induced gingivitis patient. b Representative image from a periodontitis patient. Bottom: T. tenax trophozoites observed by microscopy in each patient are showed by arrows (× 400)Back to article page