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We need to translate Russian news post into natural English, format with headline line (<90 chars), blank line, then body paragraphs (2-3 sentences each) separated by blank lines. Wrap few genuinely important facts (key numbers, percentages, drug/company/gene names, dates) in double asterisks. At most 4-5 per post. Wrap study/journal citations and publication references in single underscores.
We need to preserve all facts, numbers, names, citations exactly. No added commentary. No source link.
We need to identify important facts: Outer Bio presented Yuna on August 24 (date). Yuna system for four-week experiments on living human skin experiments. 8-millimeter full-thickness biopsy. 3D-printed porous insert. Study 2020 other model preserved integrity up to nine days. Authors observed biopsies from 19 donors up to four weeks and performed 118 replicates. Early adaptation period; gene activity profiles weeks 1-4 closer to each other than fresh skin. Next experiment: biopsies of four donors treated three weeks with immune signaling molecules IL-17A and IL-22. Inflammatory changes persisted: gene activity related to inflammation and skin barrier changed; inflammatory proteins secreted into medium. Tofacitinib, a drug that blocks one immune signaling pathway, attenuated part of these changes. Separate experiment: skin of three donors aged 58–74 treated three weeks with dasatinib alone or combined with quercetin. At end, authors registered reduced levels of IL-6 and MMP1. Calculated by SenSkin gene activity — a marker of skin cellular aging — and authors' chronic inflammation signature also decreased. Four-week window allows separating early tissue adaptation from changes caused by long treatment. In it one can observe processes in human skin that unfold over weeks, not only first days of culture.
We need to wrap key numbers, percentages, drug/company/gene names, dates in double asterisks. At most 4-5 per post. So we need to select maybe 4-5 important facts: date August
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