Oncology & Cancer

Study shows how circulating tumor cells target distant organs

Most cancers kill because tumor cells spread beyond the primary site to invade other organs. Now, a USC study of brain-invading breast cancer cells circulating in the blood reveals they have a molecular signature indicating ...

Health

Reduced food intake in old mice can no longer improve health

Reduced food intake helps both animals and humans to improve health in old age and can prolong life. But when do you have to change your diet to achieve this benefit in old age? Scientists from the Max Planck Institute for ...

Ophthalmology

Suitable marker for retina morphology across species

Outer retinal band (ORB) integrity and outer retinal thickness as they appear on OCT (Optical Coherence Tomography) have been studied extensively due to their diagnostic value. They are predictive of visual outcome in many ...

Medical research

Mounting brain organoid research reignites ethical debate

As research involving the transplantation of human "mini-brains"—known as brain organoids—into animals to study disease continues to expand, so do the ethical debates around the practice. One concern is the possibility, ...

Dentistry

Special sensory cells in the gums protect against periodontitis

Newly discovered chemical-sensing cells in the gums protect the mouth by standing guard against infections that damage soft tissue and destroy the bone that supports the teeth, report researchers from the Monell Chemical ...

Diseases, Conditions, Syndromes

CDC says people can contract tuberculosis from deer

(HealthDay)—According to the U.S. Centers for Disease Control and Prevention, humans can contract a rare type of tuberculosis, called bovine tuberculosis, from deer.

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Animal

Animals are a major group of mostly multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life. Most animals are motile, meaning they can move spontaneously and independently. Most animals are also heterotrophs, meaning they must ingest other organisms for sustenance.

Most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago.

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