No effects of DC and 60-Hz AC magnetic fields on the first mitosis of two species of sea urchin embryos.
The early divisions of sea urchin eggs was used as a model to study the effects of static and of 60 Hz sinusoidal magnetic fields. Two species were used (Sphaerechinus granularis and Paracentrotus lividus). Eggs were fertilized and exposed in two separate coils to the fields (up to 8 mT). Great care was taken to control the temperature of each sample. No difference was found in the time of the first division that could not be attributed to a temperature difference between samples. Comparison is made with other published data on various species.
Pagnac
C
C
Laboratoire de Bioélectromagnétisme EPHE, Laboratoire PIOM, Talence, France.
Genevière
A M
AM
Moreau
J M
JM
Picard
A
A
Joussot-Dubien
J
J
Veyret
B
B
D000818:Animals; D002455:Cell Division / Q000502:physiology; D005306:Fertilization; D008280:Magnetics; D008938:Mitosis / Q000502:physiology*; D010063:Ovum / Q000166:cytology*; D012617:Sea Urchins; D013696:Temperature; D013997:Time Factors; D015053:Zygote / Q000502:physiology