Urchins
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Fertilization showing sperm tail and male &
female pronuclei
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Karyogamy (pronuclear fusion)
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Immunofluorescent labeling of microtubules at
1st division
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Chromosomes at anaphase of 1st division
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Telophase 1st division
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Anaphase 2nd division
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Telophase 2nd division
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Early Telophase 3rd division (note "Kernblaeschen")
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Anaphase 4th division
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Blastula
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Embryos prepared for DAPI nuclear labeling and
microtubule immunofluorescence.
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