Results 231 to 240 of about 2,475,670 (267)
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The Theory of Follicle Selection in Cattle
Domestic Animal Endocrinology, 2016Selection of the dominant follicle (DF) during a follicular wave is manifested by diameter deviation or continued growth rate of the largest follicle (F1) and decreased growth rate of the next largest follicle (F2) when F1 reaches about 8.5 mm in cattle.
O J Ginther, O J Ginther
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Selection of the Dominant Follicle in Cattle and Horses
Animal Reproduction Science, 2000The nature of selection of the dominant follicle is reviewed by comparing research results between cattle and horses. In both species, emergence of a follicular wave is stimulated by an FSH surge. The surge reaches a peak by the time the follicles attain 4 mm in diameter in cattle and 13 mm in mares.
O J Ginther, O J Ginther
exaly +3 more sources
Systemic and Intrafollicular Components of Follicle Selection in Mares
Domestic Animal Endocrinology, 2017Mares are superb models for study of follicle selection owing to similarities between mares and women in relative follicle diameters at specific events during the follicular wave and follicle accessibility for experimental sampling and manipulation. Usually, only 1 major follicular wave with a dominant follicle (DF) greater than 30 mm develops during ...
O J Ginther, O J Ginther
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Theriogenology, 2018
Diameter deviation or follicle selection during a follicular wave begins with continuous growth rate of F1 (dominant or selected follicle; DF) and decreasing growth rate of F2 (largest subordinate). Intraovarian patterns based on presence or absence of the DF and CL are DF-CL, DF, CL, and devoid (neither DF nor CL).
O J Ginther, O J Ginther
exaly +3 more sources
Diameter deviation or follicle selection during a follicular wave begins with continuous growth rate of F1 (dominant or selected follicle; DF) and decreasing growth rate of F2 (largest subordinate). Intraovarian patterns based on presence or absence of the DF and CL are DF-CL, DF, CL, and devoid (neither DF nor CL).
O J Ginther, O J Ginther
exaly +3 more sources
Multi-scale modeling of the follicle selection process in the ovary
Mathematical Biosciences, 2005 The biological meaning of follicular development is to free fertilizable oocytes at the time of ovulation. The ovulation rate results from an FSH-dependent follicle selection process. In this paper, we designed a multi-scale model of follicular development, where selection arises from the endocrine feedback between the ovaries and pituitary gland and ...
Echenim, Nki +3 more
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Nonrandom selection of hair follicles in HPRT heterozygosity
Clinical Biochemistry, 1997The gene for hypoxanthine phosphoribosyltransferase (HPRT) has been mapped to the X chromosome, and HPRT-deficiency syndromes are inherited in an X-linked recessive manner.1 Two populations of cells can be demonstrated in the female heterozygous carriers of these syndromes. While great strides have been made in the detection of point mutations in cDNA,
T, Page, R, Broock
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Complexities of follicle deviation during selection of a dominant follicle in Bos taurus heifers
Theriogenology, 2016Follicle deviation during a follicular wave is a continuation in growth rate of the dominant follicle (F1) and decreased growth rate of the largest subordinate follicle (F2). The reliability of using an F1 of 8.5 mm to represent the beginning of expected deviation for experimental purposes during waves 1 and 2 (n = 26 per wave) was studied daily in ...
O J, Ginther +3 more
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The final stages of dominant follicle selection in cattle
Domestic Animal Endocrinology, 2002The final stages of ovarian follicle growth in cattle are typically characterized by the ultrasound-detectable emergence of a cohort of small (3-5mm in diameter) antral follicles, followed by a selection process during which the number of follicles continuing to grow decreases.
M, Mihm, E J, Austin
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A multiscale model for the selection process of ovulatory follicles
2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005The biological meaning of follicular development is to free fertilizable oocytes at the time of ovulation. The selection of ovulatory follicles in mammal ovaries is an FSH-dependent selection process. In this paper, we design a multi-scale model of follicular development, where selection arises from the feedback between the ovaries and the pituitary ...
Nki, Echenim +2 more
openaire +2 more sources