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  • 1
    Electronic Resource
    Electronic Resource
    Concentrations of steroids in the utero-ovarian vein blood, serially collected from the two sides of individual baboons, during the follicullar phase (1986)
    Springer
    Primates 27 (1986), S. 493-506 
    Details
    ISSN: 0032-8332
    Keywords: Baboons ; Ovary ; Steroids ; Gonadotropins ; Follicular phase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The purpose of this study was to determine and compare the follicular phase steroid hormone secretion into the utero-ovarian vein by the ovary with a dominant follicle and the contralateral ovary in the same baboon. Serial utero-ovarian vein blood from both sides was collected in 25 baboons by the use of a laparoscope on alternate days, starting on day 1 or 3 of the cycle and continuing through 2 to 3 days post-ovulation. Approximately 3–4 days before the day of expected ovulation, samples were collected at 8-hr intervals. Steroids estradiol (E2) and progesterone (P) were measured in all utero-ovarian vein plasma by radioimmunoassay. In the peripheral plasma, E2, P, LH, and FSH measurements were carried out. Concentrations of steroids were significantly higher on the side of the ovulating ovary by day 5 before ovulation. Individual plots however, indicated that some baboons may establish the dominant side as early as day 11 before ovulation. The preovulatory gonadotropins had a differential effect on the two ovaries. For example, E2 values on the ovulatory side ovary declined after increases in LH/FSH, whereas on the contralateral side these values had increased. Both sides showed increases in the level of P with the increases in LH. The mean interval from E2 peak to LH peak was 24 hrs and LH peak to ovulation was 24 hrs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02381894
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Chitinolytic enzymes: their contribution to basic and applied research (1993)
    Springer
    World journal of microbiology and biotechnology 9 (1993), S. 468-475 
    Details
    ISSN: 1573-0972
    Keywords: Biocontrol agents ; chitinase/chitosanase ; chitinous waste ; single-cell protein ; ultrastructural studies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract After cellulose, chitin is the second most abundant renewable resource available in nature. Marine invertebrates and fungal biomass are the two main sources of chitinous waste, which is commercially exploited. The enzymes involved in chitin degradation have been particularly well studied. Such enzymes have applications in ultrastructural studies, in the preparation of chitooligosaccharides which show anti-tumour activity, as biocontrol agents and in single-cell protein production. Here, the contribution chitin enzymology can make to basic and applied research is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00328035
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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