نتایج جستجو برای: oocytes diameter

تعداد نتایج: 133321  

Journal: :Thalassas: an International Journal of Marine Sciences 2022

Abstract Sea pens are some of the most important structural species in soft bottom benthic communities. Pteroeides spinosum is a shallow-water pennatulacean (Cnidaria: Octocorallia: Pennatulacea) habiting NE Atlantic-Mediterranean bottoms. In this study, sixteen colonies collected from NW Mediterranean (Cap de Creus, Spain) at 99–106 m depth July (2012), were used to acquire information their r...

Asgari V, Forouzanfar M Hajian M, Hosseini SM Moulavi F Nasr Esfahani MH,

Background: The potential applications of a simplified method of somatic cell nuclear transfer (SCNT) that is improved in both efficiency and throughput is considerable. Technically, a major step of SCNT is to produce large pools of enucleated oocytes (cytoplasts) efficiently, a process that requires considerable micromanipulation skill and expensive equipment. Here, we have devel oped an efficient...

Journal: :Human reproduction 1997
S Fishel S Green A Hunter F Lisi L Rinaldi R Lisi H McDermott

Human spermatids from ejaculate and testicular tissue have been utilized for evaluating human fertilization by intracytoplasmic sperm injection (ICSI) and, where possible, compared with spermatozoa utilizing sibling oocytes. Round and elongated spermatids obtained from ejaculates were either prepared through Percoll gradients or isolated and washed individually using subzonal insemination needl...

2009
I. B. Costa N. A. Teixeira P. Ripamonte D. M. Guerra C. Price J. Buratini

Recent studies have suggested a paracrine role for several fibroblast growth factors (FGFs) in the regulation of follicle and luteal development. Fgf13 is a non-secreted FGF that has been previously localized to the developing gonads, but it is not known if it is expressed in the adult ovary. The objective of the present study was to determine the expression pattern of Fgf13 mRNA in the bovine ...

Faghani Langroudi, H., Mousavi Sabet, H.,

Some reproduction aspects of the "doctor fish", Cyprinion macrostomum, were examined for the first time from the Tigris River drainage. A total of 316 specimens were caught from Gamasiab River in western Iran, at monthly intervals throughout the year from January to December 2013. Age, sex ratio, fecundity, oocytes diameter, gonado‑somatic (GSI), modified gonado‑somatic (MGSI) and Dobriyal (DI)...

Journal: :Theriogenology 2005
Monica De los Reyes Johanna de Lange Pedro Miranda Jaime Palominos Claudio Barros

The IVM of canine oocytes is characterized by low rates of metaphase II. The objective of this study was to evaluate the effects of hCG on meiotic development of canine oocytes for culture periods up to 96 h. Oocytes were collected after ovariohysterectomy. Only oocytes >110 microm in diameter, with a homogeneous dark cytoplasm and three or more layers of compact cumulus cells were used. For IV...

2013
Fábio Pereira Arantes Yoshimi Sato Edson Vieira Sampaio Elizete Rizzo Nilo Bazzoli

In order to exploit native fish species for aquaculture, basic parameters of artificial reproducetion and estimates of reproductive potential for this fish must be determined to improve hatchery success. We analyze seven Brazilian commercial fish. Spawning was induced using the hypophysation method, with injection of crude carp pituitary extract (CCPE). Characiformes species signaled the spawni...

Journal: :Bratislavske lekarske listy 2012
H Kiran D C Arikan M Kaplanoglu U Bisak M T Cetin

OBJECTIVE To investigate the effects of ovarian endometrioma on the number of oocytes retrieved for in vitro fertilization (IVF). BACKGROUND The presence of endometrioma may be the most important predictor of a poor reproductive outcome. Literature data suggest that ovarian endometriomas might affect the response to ovarian stimulation and oocyte retrieval. METHODS The present retrospective...

Journal: :cell journal 0

objective: methoxsalen is a natural photoactive compound which is found in many seed plants. a number of epidermal proliferative disorders can be treated by methoxsalen along with long wave ultraviolet a (uva). materials and methods: in an experimental study, we aimed to demonstrate the effect of methoxsalen, uva and their combination on oogenesis balb/c mice. there were two experimental groups...

Journal: :Reproduction, nutrition, development 2004
Takeshige Otoi Taeyoung Shin Duane C Kraemer Mark E Westhusin

The objective of this study was to determine an optimum maturation period of canine oocytes for the development in vitro after in vitro fertilization (IVF). Canine oocytes larger than 110 micrometers in diameter, which were collected from ovaries at the follicular phase of the reproductive cycle, were cultured for each time (48, 72 and 96 h) in TCM 199 medium supplemented with 10% canine serum,...

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