Pollination decline in context.
نویسنده
چکیده
A vaccine that uses one virus to deliver components of a second virus elicits T cells that recognize noncanonical epitopes. COVER A Classopollis meyeriana conifer pollen grain (~30 micrometers across) preserved in lake sediments deposited just after a massive, volcano-induced extinction event ~200 million years ago. This fossilized pollen grain is representative of the low-diversity plant assemblages found within the tropics of the Pangean supercontinent during the postextinction recovery period. See page 941.
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ورودعنوان ژورنال:
- Science
دوره 340 6135 شماره
صفحات -
تاریخ انتشار 2013