Results 11 to 20 of about 9,883 (206)

Criopreservación de embriones animales

, 2021
Estudios han focalizado sus esfuerzos en entender el proceso relacionado con la criopreservación de embriones, a partir de la comprensión de los mecanismos y factores que intervienen en la disminución del metabolismo celular hasta un punto cercano a su detención total.
Alexander Nivia Osuna
openaire   +3 more sources

CRIOPRESERVACIÓN DE EMBRIONES BOVINOS PRODUCIDOS IN VITRO [PDF]

Revista de la Facultad de Medicina Veterinaria y de Zootecnia, 2011
La criopr eservación de embriones se ha venido desarrollando en los últimos años con el propósito de conservar embriones obtenidos de vacas super ovuladas. Las investigaciones han continuado su desarrollo y se han dirigido hacia la criopreservaciónde oocitos y embriones in vitro, los cuales necesitan diferentes metodologías para lograr una ...
Rodríguez, P, Jiménez, C
core   +6 more sources

Congenital anomaly and perinatal outcome following blastocyst- vs cleavage-stage embryo transfer: systematic review and network meta-analysis. [PDF]

Ultrasound Obstet Gynecol, 2023
ABSTRACT Objectives To compare the reported rate of any congenital anomaly and perinatal outcome of pregnancy following blastocyst‐ vs cleavage‐stage embryo transfer using a pairwise meta‐analysis and to evaluate the same outcomes following fresh‐blastocyst, frozen‐blastocyst, fresh‐cleavage or frozen‐cleavage embryo transfer using a network meta ...
Siristatidis C, Papapanou M, Karageorgiou V, Martins WP, Bellos I, Teixeira DM, Vlahos N.   +6 more
europepmc   +2 more sources

In vitro culture, cryopreservation, and field reintroduction of the endangered Mingan thistle. [PDF]

Conserv Biol
Abstract Current plant conservation efforts are hindered by, for example, poor seed germination, low viability, and insufficient propagation and preservation technologies. To address these problems, we devised an approach to plant conservation that integrates conservation, preservation, and restoration (CPR), which uses advanced in vitro techniques. We
Shukla MR, Bi W, Roy MC, Nancy D, Saxena PK.   +4 more
europepmc   +2 more sources

Sexado de embriones bovinos

, 2005
Durante el siglo XX se lograron grandes avances en reproducción bovina, entre ellos las técnicas de sincronización de calores, inseminación artificial (a celo observado y a tiempo fijo), super-ovulación, transferencia de embriones, criopreservación de gametos y embriones, fertilización in vitro y preselección del sexo tanto de espermatozoides como de ...
Mogollòn Waltero, Edgar Mauricio
core   +4 more sources

Identifying accurate pro-choice and pro-life identity labels in Spanish: Social media insights and implications for comparative survey research. [PDF]

Perspect Sex Reprod Health, 2022
Abstract Introduction Although debate remains about the saliency and relevance of pro‐choice and pro‐life labels (as abortion belief indicators), they have been consistently used for decades to broadly designate abortion identity. However, clear labels are less apparent in other languages (e.g., Spanish).
Valdez D, Jozkowski KN, Montenegro MS, Crawford BL, Jackson F.   +4 more
europepmc   +2 more sources

Embryo excision in Compositae, with implications for combating biodiversity loss. [PDF]

Appl Plant Sci
Abstract Premise Embryo excision is an effective, under‐described means of promoting germination in the sunflower family and may help to ensure the survival of endangered taxa or lineages with limited seed availability. Methods and Results We describe and illustrate a detailed method of embryo excision used successfully to stimulate germination in a ...
Baldwin BG, Fawcett S, Wolkis D.
europepmc   +2 more sources

Fetal neurosonography and infant neurobehavior following conception by assisted reproductive technology with fresh or frozen embryo transfer. [PDF]

Ultrasound Obstet Gynecol, 2022
ABSTRACT Objective We aimed to explore fetal cortical brain development by neurosonography in fetuses conceived by assisted reproductive technology (ART), including frozen and fresh embryo transfer (ET), compared with those conceived spontaneously (SC), and to investigate its association with infant neurobehavior at 12 months of age. Methods This was a
Boutet ML, Eixarch E, Ahumada-Droguett P, Nakaki A, Crovetto F, Cívico MS, Borrás A, Manau D, Gratacós E, Crispi F, Casals G.   +10 more
europepmc   +2 more sources

Reproductive colonization of land by frogs: Embryos and larvae excrete urea to avoid ammonia toxicity

Ecology and Evolution, Volume 12, Issue 2, February 2022., 2022
Frogs have evolved terrestrial eggs many times, offering an excellent opportunity to assess traits that may facilitate aquatic‐to‐terrestrial transitions. Our results suggest the importance of physiological adaptations and physiological plasticity during early life stages, specifically the early onset of urea excretion, its upregulation under dry ...
Javier Méndez‐Narváez, Karen M. Warkentin   +1 more
wiley   +1 more source

Fetal movements: the origin of human behaviour

Developmental Medicine &Child Neurology, Volume 63, Issue 10, Page 1142-1148, October 2021., 2021
The study of the onset and ontogeny of human behaviour has made it clear that a multitude of fetal movement patterns are spontaneously generated, and that there is a close association between activity and the development of peripheral and central structures.
Christa Einspieler, Daniela Prayer, Peter B Marschik   +2 more
wiley   +1 more source