Red blood cells infected with the Plasmodium falciparum parasite. Plasmodium is the parasite that triggers malaria in people. Gary D. Gaugler/Science Source hide caption

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Gary D. Gaugler/Science Source

Experimental Malaria Vaccine Blocks The Bad Guy's Exit

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False-color transmission electron micrograph of a field of whooping cough bacteria, Bordetella pertussis. A. Barry Dowsett/Science Source hide caption

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A. Barry Dowsett/Science Source

Family Tree Of Pertussis Traced, Could Lead To Better Vaccine

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This mouse egg (top) is being injected with genetic material from an adult cell to ultimately create an embryo — and, eventually, embryonic stem cells. The process has been difficult to do with human cells. James King-Holmes/Science Source hide caption

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James King-Holmes/Science Source

First Embryonic Stem Cells Cloned From A Man's Skin

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In this colored transmission electron micrograph, an infected cell (reddish brown) releases a single Ebola virus (the blue hook). As it exits, the virus takes along part of the host cell's membrane (pink, center), too. That deters the host's immune defenses from recognizing the virus as foreign. London School of Hygiene & Tropical Medicine/Science Source hide caption

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London School of Hygiene & Tropical Medicine/Science Source

Ebola Drug Could Be Ready For Human Testing Next Year

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I'm not trying to lead you astray. It's just that scientists are not skeptical enough about their mouse studies. iStockphoto hide caption

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iStockphoto

How Mouse Studies Lead Medical Research Down Dead Ends

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An artist's illustration shows lung cancer cells lurking among healthy air sacs. David Mack/Science Source hide caption

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David Mack/Science Source

Simple Blood Test To Spot Early Lung Cancer Getting Closer

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The research team used yeast chromosome No. 3 as the model for their biochemical stitchery. Pins and white diamonds in the illustration represent "designer changes" not found in the usual No. 3; yellow stretches represent deletions. Lucy Reading-Ikkanda hide caption

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Lucy Reading-Ikkanda

Custom Chromo: First Yeast Chromosome Built From Scratch

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iStockphoto

Fewer People Are Getting Infections In Hospitals, But Many Still Die

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Your schnoz deserves more respect. epSos .de/Flickr hide caption

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epSos .de/Flickr

Never Mind Eyesight, Your Nose Knows Much More

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Adam Cole/NPR

Google's Flu Tracker Suffers From Sniffles

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