Results 21 to 30 of about 387,135 (307)

Effect of long-acting injectable progesterone supplementation, seven days after insemination, on embryo and fetal development in Nellore cows [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia
This study evaluated the effects of long-acting injectable progesterone supplementation (P4LA) on embryonic and fetal development and birth weight in Nellore cows seven days after timed artificial insemination (TAI).
L.N. Silenciato, J.E. Ferreira, O.R. Silva, M.S.D. Okada, M.V.R. Paiva, L. Ribeiro, R. Dias, M.R.B. Mello   +7 more
doaj   +1 more source

Circadian clocks during embryonic and fetal development

Birth Defects Research Part C: Embryo Today: Reviews, 2007
AbstractCircadian rhythmicity is a fundamental characteristic of organisms, which helps ensure that vital functions occur in an appropriate and precise temporal sequence and in accordance with cyclic environmental changes. Living beings are endowed with a system of biological clocks that measure time on a 24‐hr basis, termed the circadian timing system.
Serón Ferré, María, Valenzuela, Gullermo J., Torres Farfán, Claudia   +2 more
openaire   +3 more sources

Embryonic and Early Fetal Development of the Human Neocortex [PDF]

The Journal of Neuroscience, 2000
Early corticogenesis was studied in human embryos and early fetuses from Carnegie stages 16 to 22 (5–8 gestational weeks) by using immunohistochemistry for Reelin (Reln), calretinin (CR), and glutamic acid decarboxylase (GAD). A first population of Reln-positive cells appears in the neocortical anlage at stage 16 and increases in number at stages 17–18.
G, Meyer, J P, Schaaps, L, Moreau, A M, Goffinet   +3 more
openaire   +2 more sources

Role of vitamin A/retinoic acid in regulation of embryonic and adult hematopoiesis [PDF]

, 2017
Vitamin A is an essential micronutrient throughout life. Its physiologically active metabolite retinoic acid (RA), acting through nuclear retinoic acid receptors (RARs), is a potent regulator of patterning during embryonic development, as well as being ...
Adamo, Ana Cañete, Arguello, Cardoso, Dary, De Luca, Elena Cano, Gebremedhin, Gerster, Grande, Guo, Haussler, Kuwata, Lo-Coco, McLaren, Nervi, North, Ottersbach, O’Donnell, Ramón Muñoz-Chápuli, Rita Carmona, Ross, Testa, West   +23 more
core   +4 more sources

Development of Human Embryonic and Fetal Dermal Vasculature

Journal of Investigative Dermatology, 1989
This report summarizes recent advances in the understanding of the structure and organization of the microvasculature in developing human skin. Previous observations suggested that the skin contains no blood vessels as late as eight weeks estimated gestational age (EGA).
C L, Johnson, K A, Holbrook
openaire   +2 more sources

Embryonic and fetal development in different genotypes in pigs [PDF]

Bioscientifica Proceedings, 2020
It is widely accepted that uterine capacity, not ovulation rate, is the greatest restraint on litter size in pigs. Recently, the reproductive strategy(s) of the Chinese Meishan pig, a breed which farrows three to five more piglets per litter than US or European pig breeds, has come under intense scrutiny.
openaire   +2 more sources

Inhibin and activin in embryonic and fetal development in ruminants [PDF]

Bioscientifica Proceedings, 2019
Inhibin, activin and follistatin are protein hormones with diverse physiological roles. The involvement of inhibin in the regulation of pituitary FSH production and secretion in adult males and non-pregnant females is well established. However, it is unlikely that inhibin plays a similar role in pregnancy in ruminants.
G, Jenkin, J, McFarlane, D M, de Kretser
openaire   +2 more sources

Revisiting the enigmatic cortical calretinin-expressing interneurons

Frontiers in Neuroanatomy, 2014
Cortical calretinin (CR)-expressing interneurons represent a heterogeneous subpopulation of about 10-30% of GABAergic interneurons, which altogether total ca. 12-20% of all cortical neurons.
Bruno eCauli, Bruno eCauli, Bruno eCauli, Xiaojuan eZhou, Ludovic eTricoire, Ludovic eTricoire, Ludovic eTricoire, Xavier eToussay, Xavier eToussay, Xavier eToussay, Jochen F Staiger   +10 more
doaj   +1 more source

Prenatal Development and Function of Human Mononuclear Phagocytes

Frontiers in Cell and Developmental Biology, 2021
The human mononuclear phagocyte (MP) system, which includes dendritic cells, monocytes, and macrophages, is a critical regulator of innate and adaptive immune responses. During embryonic development, MPs derive sequentially in yolk sac progenitors, fetal
Mohi Miah, Issac Goh, Muzlifah Haniffa, Muzlifah Haniffa, Muzlifah Haniffa   +4 more
doaj   +1 more source

First steps to define murine amniotic fluid stem cell microenvironment [PDF]

, 2016
Stem cell niche refers to the microenvironment where stem cells reside in living organisms. Several elements define the niche and regulate stem cell characteristics, such as stromal support cells, gap junctions, soluble factors, extracellular matrix ...
Bertin, Enrica, Bonaldo, Paolo, Braghetta, Paola, DE COPPI, Paolo, Dedja, Arben, Dona', Silvia, Franzin, Chiara, Piccoli, Martina, Pozzobon, Michela, Schiavi, Francesca, Spiro, Giovanna, Taschin, E.   +11 more
core   +3 more sources