Results 141 to 150 of about 4,915 (175)

In vitro development of sheep preantral follicles.

Biology of reproduction, 1999
Preantral ovarian follicles isolated from prepubertal sheep ovaries were individually cultured for 6 days in the presence of increasing doses of FSH (ranging from 0.01 to 1 microg/ml) and under two different oxygen concentrations, 20% and 5% O2. Follicle development was evaluated on the basis of antral cavity formation as well as the presence of ...
CECCONI, Sandra, Barboni B, COCCIA, MIMI', Mattioli M.   +3 more
openaire   +3 more sources

Role of VEGF in pig preantral follicles

Veterinary Research Communications, 2008
Role of VEGF in pig preantral follicles A. Martelli & V. Russo & A. Mauro & D. Nardinocchi & C. Rinaldi & N. Bernabo & P. Berardinelli & M.
MARTELLI, Alessandra, RUSSO, Valentina, MAURO, ANNUNZIATA, NARDINOCCHI, Delia, RINALDI, CARLO, BERNABO', NICOLA, BERARDINELLI, Paolo, MATTIOLI, Mauro   +7 more
openaire   +3 more sources

Cryopreservation and in vitro culture of caprine preantral follicles

Reproduction, Fertility and Development, 2011
Preantral follicles (PFs) form a far larger oocyte reservoir (∼90% of the follicular population) than antral follicles. Several laboratories have focussed efforts on cryopreservation and in vitro culture (IVC) of PFs to obtain large numbers of fertilisable oocytes.
J R, Figueiredo, A P R, Rodrigues, J R V, Silva, R R, Santos   +3 more
openaire   +2 more sources

Isolation and long-term culture of human preantral follicles

Fertility and Sterility, 1993
To isolate intact preantral follicles from the human ovary for in vitro studies.Premenopausal human ovary was digested by a mixture of collagenase and deoxyribonuclease (DNase) for 1 hour at 37 degrees C and for 36 hour at 4 degrees C. Intact preantral follicles at classes 1 and 2 were isolated and cultured for up to 120 hours in a serum-free Dulbecco ...
S K, Roy, B J, Treacy
openaire   +2 more sources

In vitro culture of buffalo (Bubalus bubalis) preantral follicles

Theriogenology, 2002
Growth of buffalo preantral follicles in culture was studied to investigate the effect of size of preantral follicles, individual or group culture, long-term culture of preantral follicles for (40 days), addition of human follicle stimulating hormone (FSH), insulin-transferrin-selenium (ITS), growth factors (epidermal growth factor (EGF), fibroblast ...
P S P, Gupta, S, Nandi, B M, Ravindranatha, P V, Sarma   +3 more
openaire   +2 more sources

Morphogenetic reaggregation and luteinization of mouse preantral follicle cells

American Journal of Anatomy, 1979
AbstractSmall (60‐90 μm) and large (100‐130 μm) preantral follicles were isolated from adult mouse ovaries by a collagenase‐dissection technique. These follicles were composed of resting oocytes surrounded either by granulosa cells, only, or by granulosa and undifferentiated theca cells.
S V, Nicosia, R, Tojo
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In-vivo and in-vitro development of preantral follicles

Theriogenology, 1997
Abstract This paper presents the state of the art concerning the in vitro growth and differentiation of preantral follicles, i.e. from the primordial to the antral stage, in mammals. Attention is paid to their normal structure and development, nomenclature, isolation and culture methods, effects of systemic and local compounds on their development ...
Van den Hurk, R., Bevers, M. M., Beckers, Jean-François   +2 more
openaire   +1 more source

In vitro Growth of Sheep Preantral Follicles: Which Perspectives?

Veterinary Research Communications, 2003
G. Capacchietti1, S. Cecconi2, E. Colantoni2, V. Russo1, P. Berardinelli1, B. Barboni1 and M. Mattioli1 1Dip. Scienze Biomediche Comparate, Universita degli Studi di T eramo; 2Dip. Scienze e T ecnologie Biomediche,Universita degli Studi di L ’Aquila *Correspondence: Dip. Scienze Biomediche Comparate, sezione Fisiologia, Facolta di Medicina Veterinaria,
Cecconi S, Colantoni E, RUSSO, Valentina, BERARDINELLI, Paolo, BARBONI, Barbara, MATTIOLI, Mauro, CAPACCHIETTI, Giulia   +6 more
openaire   +4 more sources

Isolation of preantral follicles from buffalo ovaries

Veterinary Record, 2001
P S, Gupta, S, Nandi, B M, Ravindranatha, P V, Sarma   +3 more
openaire   +2 more sources

Hormones and preantral follicle growth in women.

Mayo Clinic proceedings, 1976
Studies of follicular morphology in biopsies of human ovarian tissue obtained from women with a syndrome of hypogonadotropic hypogonadism have been reviewed. Follicular maturation was consistent with that seen in ovarian tissues removed at postmortem examination of infants.
openaire   +1 more source