Stages of embryonic development of the zebrafish.

The early development of the Atlantic cod, Gadus morhua was studied from fertilization until first-feeding. Multiple families were reared at 7 degrees C and a developmental staging series was prepared using morphological landmarks visible with the…

The embryonic development course of Alligator sinensis was divided into 28 stages, based upon observations on 150 A. sinensis embryos at varied embryonic day, according mainly to their external morphology for early stages of embryos, such as body…

Studying the relationship between development and evolution and its role in the generation of biological diversity has been reinvigorated by new techniques in genetics and molecular biology. However, exploiting these techniques to examine the…

The origin of the early embryonic loss that occurs during the first 4 days after mating in Californian doe-rabbits has been studied at 24 h or 60 h post coitum (p.c.). For comparison, 11 New Zealand doe-rabbits were slaughtered at the same times.…

The Matrinxã is an indigenous species from the Amazon Basin (Brazil). The development of oocytes is of the synchronic type, i.e., a large number of ovules is released at the same time. The egg development is characterized by a short embryonic…

Microcystin-LR (MC-LR), a cyanobacterial toxin, is a potent inhibitor of protein phosphatase 1 (PP1) and protein phosphatase 2A (PP2A). PP1 and PP2A are critical regulators in embryonic development. However, the effects of MC-LR in embryonic…

TATA binding protein (TBP) is a key regulator of RNA polymerase transcription. It binds to core promoters, often in large multiprotein complexes, and nucleates RNA polymerase II (Pol II) transcription initiation. In addition to the previously…

With extensive use of metal oxide nanoparticles (NPs) in a variety of applications comes a higher potential of release into aquatic environments. NPs tend to form much larger aggregates in water, which are expected to settle down to the bottom of…

The pharmaceutical ethynylestradiol (EE) is a potent endocrine modulator. Application enlargement of ethynylestradiol in clinics and abuse in livestock farming and fishing make it important to explore ethynylestradiol toxicological action on…

Lissencephaly is a severe disease characterized by brain malformation. The main causative gene of lissencephaly is LIS1. Mutation or deletion of LIS1 leads to proliferation and migration deficiency of neurons in brain development. However, little is…