Qlaira<SUP>®</SUP>: a 'natural' change of direction
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چکیده
منابع مشابه
Qlaira: a 'natural' change of direction.
©FSRH J Fam Plann Reprod Health Care 2009: 35(3) Background There is no doubt that the combined oral contraceptive pill (COC) has revolutionised and changed women’s lives for the better. With the discovery of progestogens in the 1940s/1950s, and the realisation that the accidental addition of synthetic estrogen [mestranol – the inactive precursor of ethinylestradiol (EE)] improved bleeding patt...
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Predation is a fundamental interaction between species, yet it is unclear what escape strategies are effective for prey survival. Classical theory proposes that prey should either escape in a direction that conforms to a performance optimum or that is random and therefore unpredictable. Here, we show that larval zebrafish (Danio rerio) instead use a mixed strategy that may be either random or d...
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ژورنال
عنوان ژورنال: Journal of Family Planning and Reproductive Health Care
سال: 2009
ISSN: 1471-1893
DOI: 10.1783/147118909788707878