Hacker News Top Stories with Summaries (August 08, 2023)
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<h1> Hacker News Top Stories</h1>
<p>Here are the top stories from Hacker News with summaries for August 08, 2023 :</p>
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Malignant melanoma deploys elegant molecular mechanism to evade immune responses
Summary: Scientists at the Herbert Irving Comprehensive Cancer Center have discovered how malignant melanoma, a dangerous skin cancer, evades immune responses and therapies. The study identified a cell surface protein called CD58, which stimulates T cells. Melanomas decrease CD58 expression to escape immune surveillance, while a protein called CMTM6 stabilizes both CD58 and another protein, PD-L1, which inhibits T cell activity. The findings could help develop new strategies to attack this and other types of cancer.
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Ferromagnetic half levitation of LK-99-like synthetic samples
Summary: Researchers synthesized LK-99-like ceramic samples using a solid-state-sintering method and observed "half levitation" in small flaky fragments atop a Nd2Fe14B magnet. Magnetization measurements revealed weak soft ferromagnetic components, which, along with shape anisotropy, explain the observed half levitation. However, the samples did not exhibit the Meissner effect or zero resistance, indicating a lack of superconductivity.