نتایج جستجو برای: oocytes diameter

تعداد نتایج: 133321  

Journal: :caspian journal of environmental sciences 2012
h mousavi-sabet

cobitis faridpaki cobitis faridpaki (mousavi-sabet, vasil'eva, vatandoust and vasil'ev, 2011) is found in streams of the siahrud river in the southeastern caspian sea basin, and this is the first report on reproductive parameters of the newly described endemic loach. reproductive conditions are key parameters of fish populations, and their assessment is very important for endemic fishes. to stu...

Sadeghi Boroujen N, Shirazi A

Background: The study was carried out to investigate the relationship between the development potential and the diameter of ovine oocytes. Materials and Methods: Ovaries collected from a local abattoir were transported to the laboratory within 1-3 h of slaughter. The oocytes from follicles (2-6 mm in diameter) were recovered by aspiration and stored in a preincubated (at 38.6 C, 5% CO2 and maxi...

Journal: :Journal of cell science 1967
H C Macgregor

Amphibian oocytes were incubated in vitro in the presence of [H]uridine, and autoradiographs were made of nucleoli isolated from these oocytes and of sections of oocytes. After incubations of a h or less the nucleoli of oocytes larger than o-6 mm diameter are asymmetrically labelled. With longer incubations nucleoli from oocytes of o-6 to r i mm diameter become more uniformly labelled. Those of...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده کشاورزی و منابع طبیعی 1391

تخمدان ها از کشتارگاه محلی جمع آوری و بر اساس سمت تخمدان ( چپ یا راست ) و حضور یا عدم حضور جسم زرد ( cl ) دسته بندی شدند . این مطالعه در غالب چهار آزمایش مجزا به شرح ذیل انجام پذیرفت : در آزمایش اول ، شایستگی تکاملی تخمک های گاوی استحصالی از تخمدان های چپ ( l-oocytes ) و راست ( r-oocytes ) مورد بررسی قرار گرفت . برای این منظور ، بعد از دسته بندی تخمدان ها و تخمک ها بر اساس سمت تخمدان ، تخمک ها ...

2015
Ayano OI Hidetaka TASAKI Yasuhisa MUNAKATA Koumei SHIRASUNA Takehito KUWAYAMA Hisataka IWATA

In this study, we examined the effects of reconstructed oocyte-granulosa cell complexes (OGCs) on the development of porcine oocytes derived from early antral follicles (EAFs; 0.5-0.7 mm in diameter). When denuded oocytes were cocultured with granulosa cells derived from other EAFs, the oocytes and granulosa cells aggregated to form OGCs after 2 days of culture. After 14 days of culture, we com...

Journal: :medical journal of islamic republic of iran 0
amir esmailnejad moghaddam from the department of anatomy and embryology, medical school, mazandaran university of medical sciences, sari, i r. iran abbasali karimpour malekshah from the department of anatomy and embryology, medical school, mazandaran university of medical sciences, sari, i r. iran masahiko hiroi the department of obstetrics and gynecology, medical school, yamagata university, yamagata, japan. hidekazu saito the department of obstetrics and gynecology, medical school, yamagata university, yamagata, japan.

mice are ideal models for icsi experiments because of the ease of culturing eggs/embryos in vitro and the availability of ample genetic information. unfortunately, it has been extremely difficult. in this study we improved the mouse icsi method by using a new holding pipette that was made of two pipettes such that one pipette was pulled and heat merged into the other one. the outer pipette had ...

ABBASALI KARIMPOUR MALEKSHAH, AMIR ESMAILNEJAD MOGHADDAM, HIDEKAZU SAITO, MASAHIKO HIROI,

Mice are ideal models for ICSI experiments because of the ease of culturing eggs/embryos in vitro and the availability of ample genetic information. Unfortunately, it has been extremely difficult. In this study we improved the mouse ICSI method by using a new holding pipette that was made of two pipettes such that one pipette was pulled and heat merged into the other one. The outer pipette ...

2017
Sung-Sik Yanagawa Weiping HUANG Masashi NAGANO Sung-Sik KANG Yojiro YANAGAWA Yoshiyuki TAKAHASHI

The objective of this study was to clarify the effects of prematurational culture (pre-IVM) supplemented with 3-isobutyl-1-methylxanthine (IBMX) on nuclear and cytoplasmic maturation of in vitro-grown bovine oocytes. In experiment 1, oocytes (95 μm in diameter) derived from early antral follicles (0.5–1 mm in diameter) were cultured for 12 days for in vitro growth (IVG). IVG oocytes with a norm...

2014
Weiping HUANG Masashi NAGANO Sung-Sik KANG Yojiro YANAGAWA Yoshiyuki TAKAHASHI

The objective of this study was to clarify the effects of prematurational culture (pre-IVM) supplemented with 3-isobutyl-1-methylxanthine (IBMX) on nuclear and cytoplasmic maturation of in vitro-grown bovine oocytes. In experiment 1, oocytes (95 μm in diameter) derived from early antral follicles (0.5-1 mm in diameter) were cultured for 12 days for in vitro growth (IVG). IVG oocytes with a norm...

Journal: :Reproduction, nutrition, development 1999
S Ledda L Bogliolo G Leoni S Naitana

Non-atretic follicles dissected from prepubertal and adult ovaries were allocated in three groups: a) < 1 mm; b) 1-2 mm; c) > 2 mm. After 24 h of maturation, a lower percentage of adult oocytes from group a (P < 0.01) reached metaphase II than those from groups b and c (70.4 versus 89.5 and 95.5). Prepubertal oocytes showed similar results (P < 0.01; 27.2 versus 79.8 and 81.8). There was a sign...

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