Movie of meiosis I in primary spermatocytes of the crane-fly Nephrotoma suturalis that have been experimentally flattened. Time-lapse polarization microscopy using a Nikon Microphot SA, equipped for...

This sequence taken with the polarizing microscope in 1967 shows the reversible enhancement of spindle volume and birefringence by heavy water in arrested metaphase oocyte of Pectinaria gouldi (ice cr...

Dividing eggs of the medusa Clypeaster japonicus showing birefringent spindles and fertilization envelopes. The arrow indicates the direction of the compensator slow axis. As the direction of compensa...

Movie showing showing the dynamics of kinetchore microtubules during meiosis I in primary spermatocytes of the crane-fly Nephrotoma suturalis that were experimentally flattened. Time-lapse polarizatio...

This is one of 4 grouped time lapse movies (CIL 11958-11962) revealing the responses of a meiotic oocyte spindle to various forms of micromanipulation by a glass microneedle. The needle is inserted, ...

Dividing egg of the jellyfish (Spirocodon saltatrix showing birefringent spindles. The arrow indicates the direction of the compensator slow axis. AS the cell is rotated 90 degrees with respect to the...

The events of meiosis I and II in a living insect spermatocyte beginning with the breakdown of the nuclear envelope at diakinesis through to the completion of cytokinesis. Testes from the Crane fly N...

The events of meiosis I in a living insect spermatocyte beginning at metaphase with meiotic bivalents at the spindle equator followed by anaphase , segregation of bivalents to the spindle poles and t...

The time-lapse movie shows early development in the Lytechinus (sea urchin) embryo. Polarizing microscopy highlights the mitotic spindles which may show bright or dark contrast according to their orie...

The time lapse movie shows several sequences of mitosis in the liquid endosperm of the African Blood Lily Haemanthus katherinae imaged by polarizing microscopy. Birefringent microtubules are attached ...