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chronicle<br />
Vikas Gupta / Poss Lab<br />
38 scIENCE EDUCATION<br />
Teaching Genomics, Plainly<br />
40 INSTITUTE NEWS<br />
HHMI Awards $50 Million to Colleges / Fifty<br />
International Students Get Support from HHMI /<br />
<strong>Medical</strong> Fellows Get a Chance to Try Research /<br />
2012 Holiday Lectures on Science—Changing<br />
Planet: Past, Present, Future<br />
42 LAB BOOK<br />
The Yin and Yang of Plant Defense / Like a Chinese<br />
Finger Trap / Wiring the Brain<br />
45 ASK A SCIENTIST<br />
Why do we develop distastes for certain foods?<br />
46 NOTA BENE<br />
Fourteen Elected to National Academy of Sciences /<br />
Quake Receives Lemelson-MIT Prize / Horwich Awarded<br />
Shaw Prize<br />
A tiny zebrafish has just hatched from its egg. Under a microscope,<br />
the slim, translucent fish lies motionless on its side, too<br />
young even to swim. The only movement is its beating heart.<br />
At this early stage of life, the single ventricle of the fish’s heart<br />
is a hollow tube composed of only about 120 muscle cells.<br />
Within three months, those cells, called cardiomyocytes, will<br />
replicate, morph, and spread to form a full-sized adult heart.<br />
HHMI early career scientist Kenneth Poss recently visualized<br />
this dramatic transformation using a colorful new technique<br />
to label heart cells like the ones seen here. To read more about<br />
this research, visit www.hhmi.org/bulletin/fall2012.<br />
Fall 2o12 | h h m i b u l l e t i n<br />
37