See chimera.参阅chimera。...[继续阅读]

    Solvent attracting. When the sol-vent is water,the word hydrophilic is oftenused. In aqueous or other polar solutions,ions or polar groups are lyophilic.For exam-ple,the phosphate (PO2-3) group on a phos-pholipid is the lyophilic (hydrophilic) part ofthe ...[继续阅读]

    Any of a class of genesthat are crucial in determining the differentia-tion of tissues in different parts of the bodyduring development.Mutations of such genesresult in homeosis - the replacement of onebody part with another.Homeotic genes en-code protein...[继续阅读]

    The three-dimensional form inwhich a protein or nucleic acid normally oc-curs within living cells. The polypeptidechains of proteins are usually folded into theirmost stable form,and under appropriate con-ditions will resume this native state sponta-neous...[继续阅读]

    The attachment ofthe developing mammalian embryo to the wallof the uterus. The human embryo enters theuterus from the Fallopian tube,where it hasbeen fertilized four days earlier. It is at theearly BLASTOCYST stage of development.Cells on its outer surfac...[继续阅读]

    A protein-coatedvesicle,typically 50-100 nm in diameter,that transports proteins within the cell. Itforms by the budding of a CLATHRIN-COATED PIT from the plasma membrane orfrom membranes of the Golgi complex. Thevesicle is bounded by membrane,which iscoa...[继续阅读]

    See melanin.参阅melanin。...[继续阅读]

    See tropomyosin.参阅tropomyosin。...[继续阅读]

    See vegetal pole.参阅Vegetal pole。...[继续阅读]

    See DNA.参阅DNA。...[继续阅读]