نتایج جستجو برای: c3 and c4
تعداد نتایج: 16830385 فیلتر نتایج به سال:
In the C4 plant maize, three photosynthetic cell types differentiate: C4 bundle sheath, C4 mesophyll, and C3 mesophyll cells. C3 mesophyll cells represent the ground state, whereas C4 bundle sheath and C4 mesophyll cells are specialized cells that differentiate in response to light-induced positional signals. The Golden2 (G2) gene regulates plastid biogenesis in all photosynthetic cells during ...
مقدمه: لیکنپلان و واکنشهای لیکنوئیدی گروهی از ضایعات پوستی مخاطی هستند که شیوع آن در بیماران میانسال و در زنان بیشتر است. این دو گروه بیماری از لحاظ کلینیکی و هیستولوژیک قابل افتراق نیستند. علت لیکنپلان مشخص نیست ولی علل مختلفی برای ضایعات لیکنوئید مطرح شده است. در این تحقیق سعی شد از لحاظ اجزا کمپلمان سیستم ایمنی، معیاری برای تمایز این بیماریها به دست آورده شود. مواد و روشها: این مطالعه ب...
Histone modifications play important roles in regulating the expression of C4 photosynthetic genes. Given that all enzymes required for the C4 photosynthesis pathway are present in C3 plants, it has been hypothesized that this expression regulatory mechanism has been conserved. However, the relationship between histone modification and the expression of homologs of C4 photosynthetic enzyme gene...
A large stable isotope dataset from East and Central Africa from ca. 30 regional collection sites that range from forest to grassland shows that most extant East and Central African large herbivore taxa have diets dominated by C4 grazing or C3 browsing. Comparison with the fossil record shows that faunal assemblages from ca. 4.1-2.35 Ma in the Turkana Basin had a greater diversity of C3-C4 mixe...
The aim of this study was to analyze the changes in complements C3 and C4 and C-reactive protein (CRP) in patients with systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA), and to evaluate the role of these indices in the differential diagnosis of SLE and RA. The first 347 patients with SLE, 382 patients with RA and 66 patients with erythema nodosum were selected for the measuremen...
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