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    This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.

    You've got a text message. You open it up. "How are you?" it asks. That seems like an almost throw-away question. But that simple message once a week, made HIV-positive recipients¹ significantly² more likely to take their medicine and remain healthy. The study, conducted in Kenya, was published in The Lancet.

    Researchers at the University of British Columbia enrolled³ 538 patients between 2007 and 2009. Half the patients received the weekly text message, and were asked to respond within 48 hours. They could text back either "doing well" or "have a problem." Clinicians were then able to follow up with people who had a problem or didn't respond.

    The texts weren't medicine reminders⁴, they were just to let the patients know that someone was thinking about them. Apparently⁵ it worked—study participants said they felt like someone cared. And that may have helped them take care of themselves. Because the ones who received the texts were 12 percent more likely than the nonrecipients to have undetectable levels of the virus a year after being infected. Which means that the simple, friendly outreach of a text message can save lives.

    Thanks for the minute. For Scientific American's 60-Second Science, I'm Cynthia Graber

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1 recipients
adj.接受的；受领的；容纳的；愿意接受的n.收件人；接受者；受领者；接受器
参考例句：
The recipients of the prizes had their names printed in the paper. 获奖者的姓名登在报上。来自《简明英汉词典》 The recipients of prizes had their names printed in the paper. 获奖者名单登在报上。来自《现代英汉综合大词典》

2 significantly
adv.意味深长地；值得注目地
参考例句：
Prices did not alter significantly during 2004. 2004年期间，价格没有大的变化。 American English is significantly different from British English. 美国英语与英国英语有很大差异。

3 enrolled
adj.入学登记了的v.[亦作enrol]( enroll的过去式和过去分词 )；登记，招收，使入伍（或入会、入学等），参加，成为成员；记入名册；卷起，包起
参考例句：
They have been studying hard from the moment they enrolled. 从入学时起，他们就一直努力学习。来自《简明英汉词典》 He enrolled with an employment agency for a teaching position. 他在职业介绍所登了记以谋求一个教师的职位。来自《简明英汉词典》

4 reminders
n.令人回忆起…的东西( reminder的名词复数 )；提醒…的东西；（告知该做某事的）通知单；提示信
参考例句：
The film evokes chilling reminders of the war. 这部电影使人们回忆起战争的可怕场景。 The strike has delayed the mailing of tax reminders. 罢工耽搁了催税单的投寄。

5 apparently
adv.显然地；表面上，似乎
参考例句：
An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。 He was apparently much surprised at the news.他对那个消息显然感到十分惊异。