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Chapter 25

Reproduction and Development

Spermatogenesis
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim…
Oogenesis
In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways…
Fertilization
During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from…
Cleavage and Blastulation
After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube.…
Gastrulation
Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series…
Neurulation
Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the…
Cell Migration
Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms…
Determination
During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination.…
Microscopy of Fission Yeast Sexual Lifecycle
The fission yeast Schizosaccharomyces pombe has been an invaluable model system in studying the regulation of the mitotic cell cycle progression, the…
Analysis of Chromosome Segregation, Histone Acetylation, and Spindle Morphology in Horse Oocytes
The field of assisted reproduction has been developed to treat infertility in women, companion animals, and endangered species. In the horse,…
Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators
Fetoscopic laser coagulation of arterio-venous anastomoses (AVA) in a monochorionic placenta is the standard of care for twin-twin transfusion…

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