Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A process known as autophagy normally removes unwanted proteins, including a-beta, from cells.

From Science Daily • Jun. 19, 2026

Under normal conditions, these proteins are transported out of the brain and into the bloodstream through the blood-brain barrier.

From Science Daily • Jun. 16, 2026

But in some cases of severe infection, the immune system can overcorrect and send out an excess amount of these proteins, a serious and potentially fatal reaction called a cytokine storm.

From Los Angeles Times • Jun. 15, 2026

Another blood test that measures p-tau217 can detect early changes linked to the buildup of abnormal proteins in the brain, but it’s used mainly in symptomatic patients and in research, not for screening healthy people.

From The Wall Street Journal • Jun. 14, 2026

Over a barely digested lunch, the three scientists realized that this intermediate molecule had to shuttle from the cell’s nucleus, where genes were stored, to the cytoplasm, where proteins were synthesized.

From "The Gene" by Siddhartha Mukherjee