The calcium surge that starts #embryogenesis varies across species. This Primer explores a @PLOSBiology study of #zebrafish, revealing that protease-activated receptors mediate a calcium signal that initiates #egg activation before #sperm entry. Paper: https://plos.io/467nrzY Primer: https://plos.io/3TuRvy1

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S klukama 😘

#Gay #homosexual #guys #gaygirl #gays #gayboy #boy #boys #slim #slimbody #hot #gayhot #girlhot #blonde #iloveguys #ilovesex #anal #iloveanal #ilovedicks #ilovecocks #sperm #ilovesperm #festival #czech #extravagant #girl #girls #sex #hot #submissive #whore

Miluji sex a dicks 😘

Jsem submisivní.

Oral active
Anal passive

Jsem na chlapy a jsem z České republiky z Valašska. Ráda poznám chlapy na přátelství, pokec.. focení.. a klidně sex 🍓 🍓 🍓 💦 ..🍑 😘 😍