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1. The Collaborative International Dictionary of English v.0.48 |
Screening \Screen"ing\ (skr[=e]n"[i^]ng), n.
the process of examining or testing objects methodically to
find those having desirable properties. See screen[3].
Note: In the pharmaceutical industry, pharmaceutical
screening involves testing a large number of samples of
substances to find those having desirable
pharmacological activity; those samples which have the
property sought are called active or positive in the
screen. The substances tested may be pure compounds
with known structure, mixtures of pure compounds, or
complex mixtures obtained by extraction from living
organisms. There are often additional sets of test
performed on active samples, called
counterscreening to eliminate those samples that may also
possess undesirable properties. In the case of screening
of mixtures from living organisms, a type of
counterscreening called dereplication is usually
performed, to determine if the active sample contains a
known compound which has previously been studied.
[PJC]
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2. The Collaborative International Dictionary of English v.0.48 |
Dereplication \De`rep*li*ca"tion\, n. (Biochem.)
the process of testing samples of mixtures which are active
in a screening process, so as to recognize and eliminate from
consideration those active substances already studied; -- a
stage subsequent to the preliminary screening in the process
of discovery of new pharmacologically active substances in
mixtures of natural products; -- also called
counterscreening. See screening.
Note: In the process of pharmaceutical screening (testing a
large number of substances to find those having
desirable pharmacological activity), the testing of
samples of substances extracted from living organisms
(plants, microorganisms, etc.) often detects substances
already detected in prior screening. Such "known" or
"replicate" activities must be recognized at an early
stage to avoid duplicating previous efforts at
purification and structural identification. The process
of testing an sample which is active in a primary
screen, to determine if the activity is due to a
previously known substance, is called dereplication or
counterscreening.
[PJC]
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Common Misspellings > |
counterscreening ocounterscreening ocunterscreening cocunterscreening ounterscreening ccounterscreening cuonterscreening couonterscreening cunterscreening coounterscreening conuterscreening counuterscreening conterscreening couunterscreening coutnerscreening countnerscreening couterscreening counnterscreening counetrscreening countetrscreening counerscreening countterscreening countrescreening counterescreening countrscreening counteerscreening countesrcreening countersrcreening countescreening counterrscreening countercsreening counterscsreening countercreening countersscreening countersrceening counterscrceening countersreening countersccreening counterscerening counterscrerening countersceening counterscrreening counterscreeening counterscrening counterscreeening counterscreneing counterscreeneing counterscrening counterscreeening counterscreeinng counterscreeninng counterscreeing counterscreenning counterscreennig counterscreeninig counterscreenng counterscreeniing counterscreenign counterscreeningn counterscreenig counterscreeninng counterscreenigng counterscreenin counterscreeningg sounterscreening csounterscreening scounterscreening dounterscreening cdounterscreening dcounterscreening founterscreening cfounterscreening fcounterscreening xounterscreening cxounterscreening xcounterscreening vounterscreening cvounterscreening vcounterscreening ounterscreening c ounterscreening counterscreening c9unterscreening co9unterscreening c9ounterscreening c(unterscreening co(unterscreening c(ounterscreening c0unterscreening co0unterscreening c0ounterscreening ciunterscreening coiunterscreening ciounterscreening cpunterscreening copunterscreening cpounterscreening ckunterscreening cokunterscreening ckounterscreening clunterscreening colunterscreening clounterscreening caunterscreening ceunterscreening cuunterscreening co7nterscreening cou7nterscreening co7unterscreening co&nterscreening cou&nterscreening co&unterscreening co8nterscreening cou8nterscreening co8unterscreening coynterscreening couynterscreening coyunterscreening cointerscreening couinterscreening coiunterscreening cohnterscreening couhnterscreening cohunterscreening cojnterscreening coujnterscreening cojunterscreening coknterscreening couknterscreening cokunterscreening coanterscreening coenterscreening coonterscreening cougterscreening coungterscreening cougnterscreening couhterscreening counhterscreening couhnterscreening coujterscreening counjterscreening coujnterscreening coubterscreening counbterscreening coubnterscreening coumterscreening counmterscreening coumnterscreening cou terscreening coun terscreening cou nterscreening coun5erscreening count5erscreening coun5terscreening coun%erscreening count%erscreening coun%terscreening coun6erscreening count6erscreening coun6terscreening counrerscreening countrerscreening counrterscreening counyerscreening countyerscreening counyterscreening counferscreening countferscreening counfterscreening coungerscreening countgerscreening coungterscreening counherscreening countherscreening counhterscreening count3rscreening counte3rscreening count3erscreening count#rscreening counte#rscreening count#erscreening count4rscreening counte4rscreening count4erscreening countwrscreening countewrscreening countwerscreening countrrscreening counterrscreening countrerscreening countsrscreening countesrscreening countserscreening countdrscreening countedrscreening countderscreening countfrscreening countefrscreening countferscreening countarscreening countirscreening countorscreening counturscreening counte4screening counter4screening counte4rscreening counte$screening counter$screening counte$rscreening counte5screening counter5screening counte5rscreening counteescreening counterescreening counteerscreening countetscreening countertscreening countetrscreening countedscreening counterdscreening countedrscreening countefscreening counterfscreening countefrscreening countegscreening countergscreening countegrscreening counterqcreening countersqcreening counterqscreening counterwcreening counterswcreening counterwscreening counterecreening countersecreening counterescreening counteracreening countersacreening counterascreening counterdcreening countersdcreening counterdscreening counterzcreening counterszcreening counterzscreening counterxcreening countersxcreening counterxscreening counterccreening countersccreening countercscreening counter creening counters creening counter screening counterssreening counterscsreening countersscreening countersdreening counterscdreening countersdcreening countersfreening counterscfreening countersfcreening countersxreening counterscxreening countersxcreening countersvreening counterscvreening countersvcreening counters reening countersc reening counters creening countersc4eening counterscr4eening countersc4reening countersc$eening counterscr$eening countersc$reening countersc5eening counterscr5eening countersc5reening countersceeening counterscreeening counterscereening counterscteening counterscrteening countersctreening counterscdeening counterscrdeening counterscdreening counterscfeening counterscrfeening counterscfreening counterscgeening counterscrgeening counterscgreening counterscr33ning counterscre33ning counterscr33ening counterscr##ning counterscre##ning counterscr##ening counterscr44ning counterscre44ning counterscr44ening counterscrwwning counterscrewwning counterscrwwening counterscrrrning counterscrerrning counterscrrrening counterscrssning counterscressning counterscrssening counterscrddning counterscreddning counterscrddening counterscrffning counterscreffning counterscrffening counterscraaning counterscriining counterscrooning counterscruuning counterscreeging counterscreenging counterscreegning counterscreehing counterscreenhing counterscreehning counterscreejing counterscreenjing counterscreejning counterscreebing counterscreenbing counterscreebning counterscreeming counterscreenming counterscreemning counterscree ing counterscreen ing counterscree ning counterscreen8ng counterscreeni8ng counterscreen8ing counterscreen*ng counterscreeni*ng counterscreen*ing counterscreen9ng counterscreeni9ng counterscreen9ing counterscreenung counterscreeniung counterscreenuing counterscreenong counterscreeniong counterscreenoing counterscreenjng counterscreenijng counterscreenjing counterscreenkng counterscreenikng counterscreenking counterscreenlng counterscreenilng counterscreenling counterscreenang counterscreeneng counterscreenigg counterscreeningg counterscreenigng counterscreenihg counterscreeninhg counterscreenihng counterscreenijg counterscreeninjg counterscreenijng counterscreenibg counterscreeninbg counterscreenibng counterscreenimg counterscreeninmg counterscreenimng counterscreeni g counterscreenin g counterscreeni ng counterscreeninr counterscreeningr counterscreeninrg counterscreenint counterscreeningt counterscreenintg counterscreeniny counterscreeningy counterscreeninyg counterscreeninf counterscreeningf counterscreeninfg counterscreeninh counterscreeningh counterscreeninhg counterscreeninv counterscreeningv counterscreeninvg counterscreeninb counterscreeningb counterscreeninbg counterscreeninn counterscreeningn counterscreeninng counterscreenin counterscreening counterscreenin g Definition commonly spelled as: Defanition or Defenition, Synonym as: Synonim, Sinonym or Sinonim, Thesaurus as: Thesorus or Thesauris, Dictionary as: Dictionery or Dictionry and Define is usually not misspelled. What does mispell meen? It Meens...
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