Dehalogenating Desulfoluna spp. are ubiquitous in host-specific sponge microbiomes of the Great Barrier Reef.

Marine sponge holobionts are important contributors to numerous biogeochemical cycles, including the natural organohalogen cycle. Sponges produce diverse brominated secondary metabolites, which select for a population of anaerobic debrominating bacteria within the sponge body. Sponge microbiomes can be host-specific, but the selection and host-specificity of debrominating bacteria are unknown currently.

Aberrant heartworm migration to the abdominal aorta and systemic arteriolitis in a dog presenting with vomiting and hemorrhagic diarrhea.

A 2-year-old Dachshund was presented for vomiting and diarrhea. Abdominal ultrasound revealed Dirofilaria immitis in the abdominal aorta and an avascular segment of small intestine. The dog was euthanized.

Imaging diagnosis--pulmonary alveolar proteinosis in a dog.

A young dog was presented for cyanosis and right heart failure. Radiographic and CT characteristics included right heart/pulmonary artery enlargement, hepatomegaly, abdominal effusion, and severe, generalized air-space filling. Focal increased opacities were present in the peripheral lung, as were multiple pulmonary blebs and bullae.