See actinomycetes.参阅actinomycetes:...[继续阅读]

    Describing a solution whose os-motic pressure is greater than that of anotherspecified solution,the latter being HYPOTON-IC. When separated by a semipermeable mem-brane (e.g. a cell membrane) water moves byosmosis into the hypertonic solution from thehypo...[继续阅读]

    See sugar.参阅sugar。...[继续阅读]

    A fine straight hairlikeprotein structure,one or several of which e-merge from the walls of certain bacteria (e.g.E.coli).They are associated with bacte-rial CONJUGATION,pulling the conjugatingcells together,and are involved in attach-ment of certain path...[继续阅读]

    See thy-rotropin.参阅thyrotropin。...[继续阅读]

    A viscouswatery mixture of proteins,polysaccharides,and other substances that surrounds cells inthe tissues of animals.It provides a frame-work that helps bind cells together,giving strength and integrity to tissues. It is also theenvironment in which tis...[继续阅读]

    The most active estrogen pro-duced by the body. It promotes proliferation of the endometrium of the womb during the first half of the estrous cycle to prepare thewomb for ovulation,and is also important infemale development. It is metabolized to es-trone ...[继续阅读]

    The study of the structure andfunction of living cells. Modern cell biologyintegrates many biological sciences,notablybiochemistry,molecular biology and genet-ics ,and can itself be divided into varioussubdisciplines. Among the many topics stud-ied by cel...[继续阅读]

    See DNA sequencing.参阅DNA sequencing。...[继续阅读]

    (snRNA) Seespliceosome.(snRNA) 参阅spliceosome。...[继续阅读]