Stratagene led the BCW Index for the second week in a row with a gain of 4.3 percent for the five-day trading period ended Tuesday. Bio-Rad and Invitrogen were close behind, with shares of both companies up just over 4 percent for the week.

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National Geographic reports that marine mammals have lost a gene that could make them more susceptible to organophosphate damage.

NPR reports on Human Cell Atlas Consortium's effort to catalog all the different cell types within the human body.

The Union of Concerned Scientists surveyed US government scientists about Trump Administration policies and more, Science reports.

In PNAS this week: history and genetic diversity of the scarlet macaw, approach for predicting human flu virus evolution, and more.