Live image of the bdelloid rotifer Philodina roseola. Bdelloid rotifers are microscopic freshwater invertebrates best known for their capacity to undergo frequent cycles of desiccation and rehydration, their long-term asexuality, which is manifested in the absence of males and meiosis, and the ability to capture foreign genetic material at levels unprecedented in metazoans. This image of an adult female emphasizes characteristic structures such as the ciliary ring, or corona, the pharynx with a mastax consisting of hard jaws (trophi), a set of circular and longitudinal muscles, bilateral ovaries with oocyte nuclei, and the parthenogenetically developing egg. The birefringence image was taken with a video-enhanced polychromatic polscope. An eye or camera can directly see the colored polarization image in real time through the ocular with brightness corresponding to retardance and color corresponding to the slow axis azimuth. Image size is 400 × 240 microns.

Live image of the bdelloid rotifer Philodina roseola. Bdelloid rotifers are microscopic freshwater invertebrates best known for their capacity to undergo frequent cycles of desiccation and rehydration, their long-term asexuality, which is manifested in the absence of males and meiosis, and the ability to capture foreign genetic material at levels unprecedented in metazoans. This image of an adult female emphasizes characteristic structures such as the ciliary ring, or corona, the pharynx with a mastax consisting of hard jaws (trophi), a set of circular and longitudinal muscles, bilateral ovaries with oocyte nuclei, and the parthenogenetically developing egg. The birefringence image was taken with a video-enhanced polychromatic polscope. An eye or camera can directly see the colored polarization image in real time through the ocular with brightness corresponding to retardance and color corresponding to the slow axis azimuth. Image size is 400 × 240 microns.

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The Cell Image Library (www.cellimagelibrary.org) is a freely accessible, easy-to-search, public repository of reviewed and annotated images, videos, and animations of cells. Portions of the Cell Image Library were developed by ASCB under a Grand Opportunities grant from the National Institute of General Medical Sciences and are now managed by the National Center for Microscopy and Imaging Research under a perpetual license from ASCB.

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David Orloff

David Orloff is a Project Director for the National Center for Microscopy and Imaging Research at UCSD working on the Cell Image Library project. The Cell: An Image Library™ is a freely accessible, easy-to-search, public repository of images, videos, and animations of cells, showcasing cell architecture, intracellular functionalities, and both normal and abnormal processes.