Ovule development
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Part 2 book "Frontier technologies in bovine reproduction" includes content: Spermatogonial stem cells - their use in fertility restoration, multiple ovulation and embryo transfer in livestock production, ovum pick up and in vitro embryo production in bovine, milestones and recent developments in farm animal cloning, advances and applications of transgenesis in farm animals,... and other contents.
163p muasambanhan01 11-12-2023 5 2 Download
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Continued part 1, part 2 of ebook "Cunningham's textbook of veterinary physiology (5th edition)" presents the following content: the endocrine system; endocrine glands and their function; reproduction and lactation; control of gonadal and gamete development; control of ovulation and the corpus luteum; reproductive cycles; the mammary gland; reproductive physiology of the male; renal physiology; glomerular filtration; acid-base balance; pulmonary blood flow;...
253p dieptieuung 14-07-2023 6 1 Download
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The ontogeny of seed coat and endosperm tissue in Zygophyllum fabago L. was studied to determine their developmental importance using different histochemical and microscopic techniques. Our results revealed that the ovule of Z. fabago was of the anatropous and bitegmic type. The inner epidermis cells were retained up to the end of seed development, whereas the other layers were removed in the early stages. Moreover, the outer integument was changed into the seed coat sculptures during the seed development. Concurrently, multiple cytoplasmic strings were formed at the seed coat cells.
11p tudichquannguyet 29-11-2021 9 0 Download
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Negative energy balance (NEB) is an imbalance between energy intake and energy requirements for lactation and body maintenance affecting high-yielding dairy cows and is of considerable economic importance due to its negative impact on fertility and health in dairy herds. It is anticipated that the cow hypothalamus experiences extensive biochemical changes during the early post partum period in an effort to re-establish metabolic homeostasis. However, there is variation in the tolerance to NEB between individual cows.
14p vilarryellison 29-10-2021 5 1 Download
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As important female reproductive tissues, the rice (Oryza sativa L.) ovule and female gametophyte is significant in terms of their fertility. Long noncoding RNAs (lncRNAs) play important and wide-ranging roles in the growth and development of plants and have become a major research focus in recent years.
16p vigiselle2711 30-08-2021 3 1 Download
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Hazels (Corylus spp.) are economically important nut-producing species in which ovule development determines seed plumpness, one of the key parameters reflecting nut quality. microRNAs (miRNAs) play important roles in RNA silencing and the post-transcriptional regulation of gene expression.
15p viwyoming2711 16-12-2020 14 2 Download
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Acute lymphocytic leukemia (ALL) is the most common pediatric cancer. The exact cause is not known in most cases, but past epidemiological research has suggested a number of potential risk factors. This study evaluated associations between environmental and parental factors and the risk for ALL in Egyptian children to gain insight into risk factors in this developing country.
7p vimale2711 25-08-2020 13 1 Download
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Tomato (Solanum lycopersicum) self-compatibility (SC) is defined as self-pollen tubes that can penetrate their own stigma, elongate in the style and fertilize their own ovules. Self-incompatibility (SI) is defined as self-pollen tubes that are prevented from developing in the style.
14p vihashirama2711 21-05-2020 11 2 Download
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microRNAs (miRNAs) have been involved in regulation of diverse spectrum of plant development processes in many species. In cotton, few miRNAs have been well characterised in floral organ development. Floral organ, which should be finely tuned, is a crucial factor affecting the yield of cotton.
14p vihashirama2711 21-05-2020 14 0 Download
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Cotton fiber is a single cell that arises from the epidermis of ovule. It is not only a main economic product of cotton, but an ideal material for studying on the growth and development of plant cell.
9p vishikamaru2711 25-04-2020 7 2 Download
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Chloroplasts are essential organelles of plant cells for not only being the energy factory but also making plant cells adaptable to different environmental stimuli. The nuclear genome encodes most of the chloroplast proteins, among which a large percentage of membrane proteins have yet to be functionally characterized.
12p viuchiha2711 21-04-2020 5 1 Download
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(BQ) Part 1 of the document Embryology of medical (Twelfth edition) has contents: Introduction to molecular regulation and signaling, gametogenesis conversion of germ cells into male and female gametes, first week of development ovulation to implantation,.... and other contents. Invite you to refer.
177p thuongdanguyetan06 06-06-2019 9 0 Download
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The ovule ontogenesis and the megasporogenesis stages in Chenopodium botrys L. were studied with light microscopy. Flowers and young pods were removed from natural plants and fixed in FAA 70, stored in 70% ethanol, embedded in paraffin, and sectioned at 7 μm with a microtome. Staining was carried out with Hematoxylin and Eosin and developmental stages of ovule were studied.
7p vibasque27 27-03-2019 12 1 Download
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(BQ) Part 1 of the document Textbook of clinical embryology presents the following contents: Mammalian reproductive physiology, sexual development, the male reproductive tract and spermatogenesis, female reproductive tract and oocyte development, ovulation and regulation of the menstrual cycle,...`
178p thangnamvoiva3 01-07-2016 33 2 Download
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(BQ) Part 1 of the document Langman’s medical embryology presents the following contents: Introduction to molecular regulation and signaling, gametogenesis - Conversion of germ cells into male and female gametes, first week of development ovulation to implantation, second week of development - bilaminar germ disc,...
177p thangnamvoiva3 28-06-2016 32 2 Download
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For purposes of deriving/identifying categories, references having to do with courtship, sex, pair-bonding, parenting, fidelity, mate guarding, and provisioning were initially targeted, along with themes related to long-term as well as short-term mating strategies. In the process of attempting to code the lyrics it became apparent that emotional expressions could be partitioned into different action references. For instance, “love” could either convey commitment, fidelity assurance, or a non-specific state. “Love” represents commitment when sung as “I love you.
5p ut_hai_can 25-12-2012 47 3 Download
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The oviduct is an exquisitely designed organ that functions in picking-up ovulated oocytes, transporting gametes in opposite directions to the site of fertilization, providing a suitable environment for fertilization and early development, and transporting preimplantation embryos to the uterus. A variety of biological processes can be studied in oviducts making them an excellent model for toxicological studies.
8p ut_hai_can 25-12-2012 59 4 Download
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In addition to ovulation, another critical function occurs during the menstrual cycle. The woman’s body must be prepared in case fertilization occurs. Everything must be ready to nurture the developing embryo. Dur- ing the first two weeks of the cycle, estrogen causes the lining of the uterus to thicken. There is also an increase in the amount of blood that flows to this area. During the second half of the cycle, after ovulation has occurred, the follicle (now without the egg cell) develops into a yellow-colored body, the corpus luteum.
24p ut_hai_can 25-12-2012 62 4 Download
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This development of egg cells occurs within the ovary once a month. One mature egg cell is released from one of the ovaries. The ovaries con- tain follicles. A follicle is a hollow bundle of cells with an egg inside. The follicle helps the egg mature. As the egg matures, the follicle enlarges and fills with fluid. The greatly enlarged follicle moves to the edge of the ovary and bursts, releasing the egg and the fluid. This event is ovulation, the release of an egg from the ovary. (See Figure 17-4.
13p ut_hai_can 25-12-2012 74 4 Download
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There is a theoretical concern that women with a short menstrual cycle may ovulate very early in their cycle, putting them at risk of pregnancy if starting contraception as late as Day 5 or Day 7 (LNG-IUS). There is no strong evidence to support or refute the risk but some sources of patient information (e.g. FPA) advise additional contraception for women in this situation if they have a cycle shorter than 23 days. Faculty guidance on postnatal sexual and reproductive health includes recommendations on starting contraceptive methods after childbirth.
10p le_minh_nha 25-12-2012 49 4 Download