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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
![The female reproductive system. (a) Sagittal section through the pelvis. (b) Top view of pelvic orga](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_26_15_9423844.jpeg)
![The amount each injector is able to flow is displayed in glass cylinders are each injector for a ...](https://biology-forums.com/gallery/30/medium_548020_31_05_17_3_07_02_30071558.png)