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7
2019 - 09 - 12
019年9月29日訊 /生物谷BIOON /--健康飲食中脂肪和碳水化合物的完美含量是多少？加拿大麥克馬斯特大學的科學家們分析了來自世界18個國家的13.5萬多人的飲食日記，以找出答案。研究結果支持了那句古老的格言：適量的攝入碳水化合物和脂肪對你的心臟有好處，可以延年益壽。研究參與者的碳水化合物攝入量占每日熱量的46%到77%不等。這一比例越高，死亡、心臟病發(fā)作和中風的風險就越大。然而，低碳水化合物并沒有帶來好處--只要你把注意力集中在水果、蔬菜和全谷物上，而不是白面包和其他精制谷物、白米飯和高糖食物上，每天攝入50%的卡路里似乎就剛剛好。圖片來源：https://cn.bing.com更多的驚喜來自脂肪的攝入。首先，每天從脂肪中攝取35%卡路里的人實際上比那些將脂肪含量限制在10%的人死亡的風險更低。也許并不是每個人都有必要將飽和脂肪控制在總熱量的10%以下，事實上，低于7%甚至是有害的。一個關鍵的建議是如何替換多余的碳水化合物。最大的好處是多不飽和脂肪的食物，如核桃，葵花籽和亞麻籽，和脂肪含量高的魚。需要注意的是：這些發(fā)現(xiàn)是基于一項觀察性研究，因此研究人員不能直接將因果聯(lián)系起來。您將希望將它們個性化到您獨特的健康檔案中。如果你有任何健康問題，和你的醫(yī)生談談如何最好地解釋結果。（生物谷Bioon.com）
8
2021 - 11 - 06
來自美國和日本的科學家們通過研究發(fā)現(xiàn)，由于進行了有規(guī)律的有氧運動，相比年輕成年人而言，中年的耐力運動員還會顯示出相當水平的上述因素。本文研究結果提供了強有力的跡象表明，血壓的控制和血管彈性程度的改善或有助于更好地改善中年人群大腦血流的調節(jié)。2021年12月19日 訊 /生物谷BIOON/ --中年有氧運動或能顯著影響年齡相關的大腦和心血管調節(jié)的變化，中年耐力運動員要比相同年齡組的久坐成年人有著更好的血壓控制和更高的動脈彈性（一種心血管疾病風險的無創(chuàng)測量）。近日，一篇發(fā)表在國際雜志Journal of applied Physiology上題為“Midlife aerobic exercise and dynamic cerebral autoregulation： associations with baroreflex sensitivity and central arterial stiffness”的研究報告中，來自美國和日本的科學家們通過研究發(fā)現(xiàn)，由于進行了有規(guī)律的有氧運動，相比年輕成年人而言，中年的耐力運動員還會顯示出相當水平的上述因素。本文研究結果提供了強有力的跡象表明，血壓的控制和血管彈性程度的改善或有助于更好地改善中年人群大腦血流的調節(jié)。圖片來源：Pixabay/CC0 Public Domain中年機體動脈的僵硬程度與晚年中風和癡呆癥風險增加有關，同時還會增加機...
9
2018 - 07 - 20
一種非常復雜的治療一些乳腺癌和卵巢癌的方法就是使用一類叫做PARP抑制劑的藥物。PARP抑制劑旨在利用讓發(fā)生某些突變的腫瘤特別致命的缺陷。然而，這種靶向癌癥治療方法有時會失敗，科學家們迫切地想要知道其中的原因。 如今，在一項新的研究中，美國洛克菲勒大學的Titia de Lange教授及其團隊對這種耐藥性機制提供了新的認識，并且為抵抗這種耐藥性提供了新的希望。他們發(fā)現(xiàn)了由基因BRCA1發(fā)生的錯誤引發(fā)的一些癌癥逃避旨在殺死它們的定制藥物的分子機制。這一發(fā)現(xiàn)也挑戰(zhàn)了之前針對這些PARP抑制劑成功地或未能給患者帶來益處的機制作出的猜測。相關研究結果于2018年7月18日在線發(fā)表在Nature期刊上，論文標題為“53BP1–RIF1–shieldin counteracts DSB resection through CST- and Polα-dependent fill-in”。圖片來自Laboratory of Cell Biology and Genetics at The Rockefeller University。他們的發(fā)現(xiàn)有助于解釋為什么某些癌癥會對PARP抑制劑作出反應，而其他癌癥卻沒有---這種認識最終可能有助于改善對患者的治療。 缺陷和機會 專家們預測今年將有大約288000例乳腺癌和卵巢癌新確診病例。這些癌癥的很大一部分是由人類基因組中的兩個最臭名昭著的基因--- ...
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產(chǎn)品名稱： EVOS? Vessel Holder, universal
型號：
時間： 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder has a 25.4 mm opening and accommodates most vessel types. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samp...
型號：
時間： 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates one Greiner T-75 flask. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of ves...
型號：
時間： 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates a hemocytometer. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of vessel hol...
型號：
時間： 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates one Nunc® T-75 flask. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of ...
型號：
時間： 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates two 25 cm T-flasks. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of vessel ...
型號：
時間： 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates one 100 mm Petri dish. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of vess...
型號：
時間： 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates two 60 mm Petri dishes. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of ves...
型號：
時間： 2019 - 04 - 12
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates four 35 mm Petri dishes. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of ve...
型號：
時間： 2019 - 04 - 12
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates two 25 x 75 mm slides. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of vess...
型號：
時間： 2019 - 04 - 12
描述This fluorite objective is ideal for fluorescence and demanding transmitted-light applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. This is also a phase-contrast objective, making it useful for hard-to-see, translucent speciments. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies nee...
產(chǎn)品名稱： EVOS? Light Cube, Cy?5
型號：
時間： 2019 - 04 - 12
描述All EVOS® fluorescence imaging systems and the Countess® II FL Automated Cell Counter contain our unique, proprietary LED light cubes. This world-leading light engine outputs remarkable intensity over a short light path that delivers superior fluorophore excitation. Each cube contains an LED, condensing optics, and hard-coated filters. EVOS® light cubes are user-changeable and automatically recognized by the system. The Cy®5 light cube is ideal for use with Alexa Fluor&...
產(chǎn)品名稱： EVOS? Light Cube, RFP
型號：
時間： 2019 - 04 - 12
描述All EVOS® fluorescence imaging systems and the Countess® II FL Automated Cell Counter contain our unique, proprietary LED light cubes. This world-leading light engine outputs remarkable intensity over a short light path that delivers superior fluorophore excitation. Each cube contains an LED, condensing optics, and hard-coated filters. EVOS® light cubes are user-changeable and automatically recognized by the system. The RFP light cube is ideal for use with Alexa Fluor® ...
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