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The genetic origins of corn on the cob

In 1909, while harvesting a typical corn crop (Zea mays) in Illinois, a field worker noticed a plant so unusual that it was initially believed to be a new species. Its "peculiarly shaped ear" was "laid aside as a curiosity" and the specimen was designated Zea ramosa (from the Latin ramosus, "having many branches"). Due to the alteration of a single gene, later named ramosa1, both the ear and the...

How does Mycobacterium tuberculosis infect the lung?

Tuberculosis (TB) is the most common major infectious disease today. It is estimated that two billion people--or one-third of the world's population--are chronically infected without active symptoms. Nine million new cases of active disease are diagnosed annually, resulting in two million deaths. TB is predominantly a lung disease. It is caused by a microbe called Mycobacterium tuberculosis which...

Experimental TB drug effective against resistant and latent mycobacterium tuberculosis

An experimental tuberculosis drug may be effective against not only multi drug-resistant forms of the disease but could also be the first compound to treat the latent stage of infection as well. Researchers report their results today at the 2006 ASM Biodefense Research Meeting. . "The class of which this compound is the lead has a very different mechanism of action from any other drug currently...
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