Results 21 to 30 of about 5,929 (148)

In vitro culture, cryopreservation, and field reintroduction of the endangered Mingan thistle

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
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
Mukund R. Shukla   +4 more
wiley   +1 more source

EN TORNO A LA PERSONALIDAD DEL EMBRIÓN [PDF]

open access: yes, 2000
MacIntyre, en el inicio de “After Virtue”, afirma que el principal argumento de los provida en contra del aborto se puede expresar como sigue: el embrión “es un individuo identificable, que difiere de un infante recién nacido sólo en encontrarse en una ...
Isler Soto, Carlos
core   +1 more source

Administración de lutropina (r-hLH) y su respuesta en la tasa ovulatoria y embriones viables en ovejas Pelibuey

open access: yesRevista Mvz Cordoba, 2023
Objetivo. Evaluar la influencia de lutropina alfa (LH recombinante humana, r-hLH) administrada a 12 y 24 h post-retiro del dispositivo de progesterona (CIDR) en la respuesta de horas al inicio del estro, tasa ovulatoria, ovocitos no fertilizados ...
Alejandro García-Salas   +5 more
doaj   +1 more source

Ultrasound features in early pregnancy for predicting abnormal karyotype in first‐trimester miscarriage

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.
ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty   +5 more
wiley   +1 more source

Dilemas bioéticos y jurídicos de la reproducción asistida en la sociedad actual en España

open access: yesRevista Latinoamericana de Bioética, 2018
Este trabajo analiza algunos problemas jurídicos y bioéticos que no están resueltos por la legislación aplicable a la reproducción asistida, uno de los campos más controvertidos de la medicina y la biotecnología humana.
Pablo Enguer Gosálbez   +1 more
doaj   +1 more source

Performance of non‐invasive prenatal testing in vanishing‐twin and multiple pregnancies: results of TRIDENT‐2 study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 6, Page 738-746, December 2025.
ABSTRACT Objective To evaluate the performance of non‐invasive prenatal testing (NIPT) in vanishing‐twin and multiple pregnancies. Methods This study was conducted as part of the TRIDENT‐2 study, in which NIPT was offered as a first‐tier screening test to women with a multiple pregnancy or vanishing‐twin pregnancy between 1 June 2020 and 31 March 2023 ...
J. C. A. van Eekhout   +86 more
wiley   +1 more source

Variación ontogenética y dimorfismo sexual en Platalina genovensium (Chiroptera: Phyllostomidae)

open access: yesRevista Peruana de Biología, 2019
La variación por edad y el dimorfismo sexual en murciélagos son aspectos frecuentemente estudiados; sin embargo, esta información no está disponible para Platalina genovensium, una especie de murciélago amenazado que habita ecosistemas secos entre Perú y
Dennisse Ruelas
doaj   +1 more source

Reproductive outcome after frozen embryo transfer with hormone replacement therapy according to luteal‐phase support protocol: systematic review and network meta‐analysis of randomized controlled trials

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 4, Page 422-432, October 2025.
ABSTRACT Objective To compare reproductive outcome between luteal‐phase support (LPS) protocols for frozen embryo transfer (FET) cycles with hormone replacement therapy (HRT). Methods A search was conducted in MEDLINE, Scopus, LILACS, EMBASE, Scielo.br, PROSPERO, CINAHL, PsycINFO, AMED, ClinicalTrials.gov, ICTRP, the Cochrane Library and conference ...
A. Etrusco   +11 more
wiley   +1 more source

El embrión humano:

open access: yesRevista de Derecho (Coquimbo), 2015
La consideración jurídica del nasciturus o criatura humana concebida pero aún no nacida es una vieja cuestión que preocupó ya a los juristas romanos. Se plantearon ellos qué protección jurídica debe concederse a este ser, que no tiene apariencia visible,
Hernán Corral Talciani
doaj  

Impact of endometrial thickness on reproductive outcome in fresh and frozen–thawed embryo transfer: systematic review and meta‐analysis

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 3, Page 271-281, September 2025.
ABSTRACT Objective To evaluate the impact of endometrial thickness on the reproductive outcomes of embryo transfer (ET) treatments using both cut‐off‐based meta‐analysis and meta‐analysis of proportions. Methods This was a systematic review and meta‐analysis of comparative studies (randomized controlled trials, cohort studies, case–control studies) and
F. Pérez‐Milán   +10 more
wiley   +1 more source

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