(A) Warthin–Starry-stained section of a Morgellons disease callus, patient 2, demonstrating a spirochete (arrow). 1000× magnification. (B) Dieterle stain, spirochete from patient 1 (arrow). 1000× magnification. (C) Dieterle stain, spirochetes from patient 2. 1000× magnification. (D) Dieterle stain, spirochetes from patient 3. 1000× magnification. (E) Dieterle stain, spirochetes from patient 4. 1000× magnification. (F) Warthin–Faulkner-stained bovine digital dermatitis section, showing numerous spirochetes among keratinocytes. 1000× magnification.