To make monoclonal antibodies, scientists inject a target molecule into the mouse.

The scientists injected the patients with gonorrhea and syphilis-and even encouraged many of them to pass the disease on to others.

In the late 19th century, scientists ground up tissue, injected it into dogs and observed massive clotting.

After 24 hours, the scientists injected some embryos with either of the two proteins.

The scientists then injected the virus into mice, which immediately became infected and died.

In four years, scientists injected more than 8,000 fertilized eggs to produce just 43 transgenic pigs.

When scientists inject animals with angiotensin, the animals have heart attacks and strokes.

But when the scientists injected the rodents with extra doses of leptin, two things happened.

To determine that, the scientists injected tissues from the sick horses into two healthy horses.

A week later, the scientists injected the purified virus into two more horses.