La Jolla, Calif. Professor Ralph Lewin, known as ``the father of green algae genetics,'' died in his sleep Sunday at his California home from esophageal cancer.
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Biology expert Ralph Lewin dies
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Allen Kolstad dies after battle with cancer
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My Dad has lung cancer
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Edwards dies of cancer
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Solazyme claims to produce oil from algae
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Man died of natural causes, police say
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Elliott Kastner dies of cancer
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George Carlin dies of heart failure
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Richard Wright, founder of Pink Floyd, dies at 65
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Autopsy confirms Davy Jones died of heart attack
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Victim died of 'natural causes'
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Nobel Prize winner Alexandr Solzhenitsyn dies
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Haim died of natural causes
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Palisades gym teacher died of natural causes
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Howard Zinn passes away at 87
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Heath 'died of natural causes'
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Woman died of natural causes