A geneticist who studied recombination in bacteria and bacteriophage. As a graduate student in the laboratory of Joshua Lederberg,he carried out the critical experiments that led to the discovery of transduction.研究細(xì)菌和噬菌體(基因)重組的遺傳學(xué)家。作為Joshua Lederberg實(shí)驗(yàn)室的一...[繼續(xù)閱讀]

    Complexes of lipids and proteins. The most important and abundant examples of lipoproteins are the lipoproteins that function to transport fats in the blood and that are classified mainly in terms of their densities: high-density lipoproteins (HDLs),inter...[繼續(xù)閱讀]

    A molecule that,because it structurally resembles a certain inducer of transcription,can act to induce transcription in lieu of the authentic inducer,for example,IPTG in lieu of lactose as a gratuitous inducer of the lac operon。與轉(zhuǎn)錄誘導(dǎo)物結(jié)構(gòu)類似的分子,可代替真正的誘導(dǎo)物誘導(dǎo)...[繼續(xù)閱讀]

    One part of a complex biological molecule such as an enzyme or ribosome.The subunits combined together constitute the biologically active molecule. 酶和核糖體等復(fù)雜生物分子的一個(gè)組成部分。所有亞基結(jié)合在一起才會(huì)組成有生物活性的分子。...[繼續(xù)閱讀]

    Outside the cell.細(xì)胞的外面。...[繼續(xù)閱讀]

    A solution of sodium chloride at a concentration exactly equivalent (8 grams per liter; 0.8%) to that found in bodily fluids.一種與體液中的濃度幾乎相等的氯化鈉溶液(8克/升;0.8%)。...[繼續(xù)閱讀]

    Abbreviation for ribosomal RNA,the RNA strands that are,together with the ribosomal proteins,the basic components of ribosomes. In eukaryotic cells there are two major rRNAs denoted as 18S (found in the small ribosome subunit) and 28S (found in the large ...[繼續(xù)閱讀]

    Any of the globular serum proteins secreted by cells of the immune system for the purpose of dealing with foreign antigens. Immunoglobulins are divided into five classes: IgM,IgG,IgA,IgD,and IgE. 由免疫系統(tǒng)的細(xì)胞分泌的球狀血清蛋白,用來對(duì)付外來抗原。免疫球蛋白分為5種:...[繼續(xù)閱讀]

    A device for removing solvent from large volumes of a solution by evaporation to concentrate the solute. A flash evaporator consists of a heated,rotating glass sphere with a tube to allow the evaporating solvent to exhaust.一種通過蒸發(fā)將溶劑從大量的溶液中除去以濃縮溶質(zhì)的設(shè)備。...[繼續(xù)閱讀]

    A recombinant DNA technique in which double-stranded cDNA is spliced into vectors so that the gene can be amplified or expressed. 將雙鏈cDNA拼接入載體以使相關(guān)基因擴(kuò)增或表達(dá)的DNA重組技術(shù)。...[繼續(xù)閱讀]