久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

Spider bite offers a lesson

Updated: 2013-09-29 07:26

(The New York Times)

  Print Mail Large Medium  Small

I lay with my teeth clenched and my hands gripping the sides of a hospital bed. Strangers in white coats filled the tiny room. Waves of pain lapped from my abdomen into my chest as the venom worked its way toward my heart.

An experimental antivenin drug was about to be injected into my bloodstream.

As a professional outdoorsman, I have been lucky with snakes and reckless with bears. I have had some close calls with lionfish. It figures that the thing to finally put me down would be living on my own front porch.

The black widow's graceful form and red hourglass marking have made it America's most recognizable spider. Black widows are surprisingly shy and retiring. People in the United States probably walk past hundreds of them in a lifetime without even realizing it.

 Spider bite offers a lesson

Black widow spiders are common, but they shy away from people. A male black widow, found in Virginia. Jackson Landers

Each one packs enough venom to lay out a heavyweight boxer for days. Both sexes carry the same venom, but the females have more of it and their fangs can inject it deeper.

Still, globally only a few people each year are killed by widow bites.

Spider bite offers a lesson

The perimeter of my house in Virginia turned out to harbor a village of black widows. Interested in learning about them, I sometimes captured a dozen in a day.

One spring afternoon, I decided to go fishing. On the porch where I had removed so many black widows, I kept a pair of water shoes and some fishing tackle. I put them in my car and drove to my favored spot.

I donned the shoes. Within about a dozen steps, I felt a stinging sensation, and realized what must have happened: a black widow from the porch had made its home in my shoe.

Some people are more affected by the venom than others. Most healthy adults experience a lot of pain and recover on their own. But others become incapacitated, and some die. Which group would I fall into? Why make a big deal out of nothing?

I decided to wait and find out before driving. I dipped my foot into the cool water and decided to pass the time by fishing.

Three catfish later, the symptoms were progressing. I felt a warmth in my abdomen. This turned into pressure, then cramping. I headed for the University of Virginia hospital, in Charlottesville.

My research had taught me that while an antivenin exists, few patients actually get it.

Spider bite offers a lesson

The medicine has changed little since 1895, when it was discovered by a French physician, Albert Calmette. By injecting spider or snake venom into a horse, Calmette induced symptoms of a bite, causing the body to produce antivenin. Blood could be drawn from the horse, and the substance could be isolated and stored for later use.

While the antivenin has saved many lives, it carries dangers of its own. Some patients have a life-threatening allergy to horse proteins. So the medicine is given only if the victim seems to be near death; most patients are expected to tough it out, an ordeal that can take days.

That night, residents and medical students stopped in to gawk; few had ever seen a black widow patient.

Dr. Christopher Holstege, a calm toxicologist, said he wanted me to be part of a test of a new form of antivenin. The drug, Analatro, was made in sheep, and it had fewer impurities to which the body could react. It sounded promising, but I could not take pain medications that would mask the drug's effects. And the side effects were not well understood. Still, I could not bear not to volunteer.

My biceps cramped. I shivered and twitched. At midnight, the crowd was silent as the substance was injected. A wonderful warm flow spread from my arm into my chest, then my abdomen.

It could take years of study before Analatro is ready, but it could completely change the way black widow bites are treated. Instead of making patients wait through days of pain to avoid an allergic reaction, doctors could administer antivenin immediately and discharge them within hours.

When I got home at 4 a.m., I collapsed into bed. The next afternoon, I hopped to the kitchen to make coffee. There on the floor, I spied a little brown spider. I dropped a jar over it and captured an excellent specimen of a male black widow. I took a series of photographs, and then it met its end.

The New York Times

(China Daily 09/29/2013 page11)

久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    亚洲三级免费电影| 蜜桃视频在线一区| 欧美日韩成人一区二区| 蜜桃视频第一区免费观看| 精品国产制服丝袜高跟| 成人av在线一区二区三区| 亚洲综合激情小说| 日韩片之四级片| 夫妻av一区二区| 一区二区三区四区激情| 欧美日韩极品在线观看一区| 美国十次综合导航| 国产精品卡一卡二| 欧美日韩一区中文字幕| 狠狠色丁香婷婷综合| 亚洲欧美综合在线精品| 在线成人免费观看| 国产精品一区二区不卡| 亚洲精品免费在线观看| 日韩视频123| 91一区二区三区在线观看| 视频一区二区中文字幕| 久久综合精品国产一区二区三区| caoporen国产精品视频| 天天综合日日夜夜精品| 久久综合av免费| 欧洲av一区二区嗯嗯嗯啊| 老司机午夜精品| 一区二区在线看| 精品国产91九色蝌蚪| 色一区在线观看| 蜜桃久久久久久| 亚洲欧美日韩中文字幕一区二区三区| 3atv一区二区三区| av高清不卡在线| 免费成人结看片| 亚洲少妇屁股交4| 欧美成人高清电影在线| 在线欧美日韩国产| 国产一区二区福利| 亚洲v精品v日韩v欧美v专区| 国产精品欧美久久久久一区二区| 91.xcao| 99久久久免费精品国产一区二区| 免费观看91视频大全| 亚洲女爱视频在线| 久久精品人人做人人综合| 欧美精品久久久久久久多人混战| 成人午夜碰碰视频| 久久99精品久久久久久动态图 | 婷婷丁香久久五月婷婷| 中文字幕欧美三区| 日韩欧美一区二区免费| 欧美一a一片一级一片| 成人动漫一区二区三区| 久久99国产乱子伦精品免费| 亚洲成人自拍偷拍| 1024成人网| 国产午夜精品一区二区| 欧美一级欧美一级在线播放| 91久久奴性调教| av一区二区三区在线| 国产一区二区视频在线| 免费在线成人网| 亚洲www啪成人一区二区麻豆| 成人欧美一区二区三区小说| 国产亚洲精品超碰| 精品国产污网站| 欧美一级日韩一级| 精品视频在线看| 色婷婷av一区二区三区软件| 成人免费看的视频| 国产高清精品久久久久| 久久99精品久久久| 另类小说图片综合网| 日本在线观看不卡视频| 亚洲一区日韩精品中文字幕| 亚洲视频在线观看一区| 国产精品国产三级国产aⅴ原创 | 日韩精品一区二区三区中文精品| 欧美美女一区二区三区| 欧美亚洲国产怡红院影院| 91丨九色丨蝌蚪富婆spa| 成人av网址在线| 成人网在线免费视频| 国产电影一区二区三区| 国产一级精品在线| 国产一区二区不卡| 国产精品综合二区| 国产一区二区看久久| 国产精品一区二区三区网站| 国内久久婷婷综合| 国产一区二区三区日韩| 国产制服丝袜一区| 国产在线国偷精品产拍免费yy| 捆绑变态av一区二区三区| 美女国产一区二区三区| 久久99这里只有精品| 韩国欧美国产1区| 国产尤物一区二区在线| 国产美女一区二区| 国产成人在线看| 国产**成人网毛片九色| 成人ar影院免费观看视频| 91亚洲精品乱码久久久久久蜜桃| 91碰在线视频| 在线观看免费一区| 777午夜精品视频在线播放| 欧美一区二区三区在线电影| 日韩一级欧美一级| 久久久久久久久久电影| 国产精品欧美精品| 一区二区三区视频在线看| 亚洲国产日韩一区二区| 日韩精品一二三区| 精品一区二区三区av| 国产不卡在线一区| 91丨国产丨九色丨pron| 欧美影片第一页| 91精品欧美一区二区三区综合在 | 中文欧美字幕免费| 综合亚洲深深色噜噜狠狠网站| 亚洲精品乱码久久久久久| 亚洲一区二区美女| 奇米888四色在线精品| 国产精品影视天天线| 成人免费视频一区二区| 91美女蜜桃在线| 5月丁香婷婷综合| 久久夜色精品国产欧美乱极品| 中文在线资源观看网站视频免费不卡| 综合久久综合久久| 视频一区国产视频| 国产东北露脸精品视频| 色综合激情五月| 欧美一区欧美二区| 国产精品萝li| 午夜激情综合网| 国产自产2019最新不卡| 一本一道久久a久久精品| 欧美视频一区二区三区在线观看| 欧美成人精品福利| 日韩毛片高清在线播放| 日韩高清电影一区| 国产成人在线视频网站| 欧美在线观看一区| 久久综合久久综合亚洲| 亚洲精品日韩一| 精品一区二区在线免费观看| 99视频一区二区三区| 7799精品视频| 国产精品国产三级国产普通话三级 | 久久综合给合久久狠狠狠97色69| 亚洲视频一区二区在线| 日本不卡一二三| www.欧美色图| 日韩一区国产二区欧美三区| 国产精品视频你懂的| 天使萌一区二区三区免费观看| 国产电影精品久久禁18| 欧美日韩aaaaaa| 亚洲国产精品成人综合| 午夜免费久久看| 成人av在线资源| 日韩欧美国产1| 亚洲免费av网站| 国产在线精品免费av| 欧美日韩精品免费观看视频| 亚洲国产高清不卡| 蜜桃视频一区二区三区| 色视频一区二区| 国产亚洲成av人在线观看导航| 亚洲成人动漫一区| 99麻豆久久久国产精品免费 | 国产欧美日韩视频一区二区| 天堂av在线一区| 91在线观看一区二区| 精品日韩在线观看| 五月天一区二区三区| 99久久精品免费精品国产| 精品国产电影一区二区| 亚洲福利视频一区二区| av电影天堂一区二区在线观看| 精品成人佐山爱一区二区| 午夜国产不卡在线观看视频| www.激情成人| 久久日一线二线三线suv| 视频一区二区三区入口| 色综合一个色综合亚洲| 国产亚洲成av人在线观看导航| 日韩av网站在线观看| 日本乱人伦aⅴ精品| 中文字幕av一区二区三区免费看| 极品美女销魂一区二区三区免费| 欧美另类高清zo欧美| 亚洲精品免费一二三区| 99久久精品情趣| 国产精品久久久一区麻豆最新章节| 久久99国产乱子伦精品免费| 这里只有精品电影|