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Are coelacanths living fossils?

Are coelacanths living fossils? After being found alive, the coelacanth was dubbed a “living fossil,” a description now shunned by scientists. “By definition, a fossil is dead, and the coelacanths have evolved a lot since the […]

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How do T cells recognize tumor antigens?

How do T cells recognize tumor antigens? Cytotoxic T cells recognize, via their T cell receptors (TCRs), small antigenic peptides presented by the major histocompatibility complex (pMHC) on the surface of professional antigen-presenting cells and infected […]

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What audiometric means?

What audiometric means? An audiometry exam tests your ability to hear sounds. Sounds vary, based on their loudness (intensity) and the speed of sound wave vibrations (tone). What is the purpose of audiometric test? Typically, audiometric […]

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