Dr. Venter and his colleagues estimate that the human genome contains 50,000 to 80,000 genes.

Although his net worth is a secret, former colleagues estimate that at the peak, he was probably worth more than $200 million.

In one way or another, his colleagues estimate, he served as teacher to men who make up fully half of EgyptAir's 533 pilots.

Gottfried and colleagues further estimated the schematics of megalodon's entire skeleton.

She and her colleagues estimate that as many as 176 of every 100,000 Americans get whooping cough each year.

My colleagues and I estimate that eventually each 10 percent increase in price causes per capita cigarette consumption to decline by about 8 percent.

A colleague estimated that 10 million people saw the Davidsons' picture in the morning papers.

In the mid-1970's, colleagues estimated Walsh's earnings at $200,000 a year.

Mr. Moore and his colleagues estimate that about a third of the plants native to the five boroughs have disappeared in the last 100 years.