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1.
A device for localized micro-extraction and injection of cytoplasm in the amphibian egg with simultaneous marking of the wound site.
Hengst, R T; Reitsma, H R.
Mikroskopie ; 32(11-12): 345-50, 1977 Jan.
Article in English | MEDLINE | ID: mdl-558563

Subject(s)
Amphibians/anatomy & histology , Micromanipulation/instrumentation , Ovum/growth & development , Animals , Cytoplasm , Female , Micromanipulation/methods , Xenopus
2.
Cinematographic Observation of "Post-Fertilization waves" (PFW) on the zygote ofXenopus laevis.
Hara, K; Tydeman, P; Hengst, R T M.
Wilehm Roux Arch Dev Biol ; 181(2): 189-192, 1977 Jun.
Article in English | MEDLINE | ID: mdl-28304915

ABSTRACT

In fertilizedXenopus eggs, shortly after egg rotation but well before the occurrence of the cleavage-associated "surface contraction waves", two circular dark zones originate consecutively from the pigment spot marking the site of sperm entrance. They expand and travel centrifugally over the egg surface.

3.
Cytoplasmic segregation during the symmetrisation of the anuran egg.
Ubbels, G A; Hengst, R T; Klag, J J.
Acta Morphol Neerl Scand ; 13(3): 241-2, 1975 Nov.
Article in English | MEDLINE | ID: mdl-1211237

Subject(s)
Amphibians , Cytoplasm/physiology , Embryo, Nonmammalian/physiology , Animals , Xenopus
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