,John W. Ridley, Ph.D.
e e e
e e e e e e e e e e e e e e e e e e
,Thiseiseaneelectroniceversioneofetheeprintetextbook.eDueetoeelectronicerightserestrictions,
someethirdepartyecontentemayebeesuppressed.eEditorialereviewehasedeemedethateanyesuppressedecont
entedoesenotemateriallyeaffectetheeoverallelearningeexperience.eTheepublisherereservesetheerightetoere
moveecontentefromethisetitleeateanyetimeeifesubsequenterightserestrictionserequireeit.eForevaluableeinf
ormationeonepricing,epreviouseeditions,echangesetoecurrenteeditions,eandealternateeformats,epleaseevi
sitewww.cengage.com/higheredetoesearchebyeISBN#,eauthor,etitle,eorekeywordeforematerialseineyoure
areaseofeinterest.
, e
ParasitologyeforeMedicaleandeClinicaleLab ©e2012eDelmar,eCengageeLearning
oratoryeProfessionals
ALLeRIGHTSeRESERVED.eNoeparteofethiseworkecoveredebyetheecopyrigh
JohneW.eRidley tehereinemayebeereproduced,etransmitted,estoredeoreusedeineanyeform
ViceePresident,eEditorial,eCareereEducatione& orebyeanyemeansegraphic,eelectronic,eoremechanical,eincludingebutenotel
eTrainingeSolutions:eDaveeGarza
imitedetoephotocopying,erecording,escanning,edigitizing,etaping,eWebedis
tribution,einformationenetworks,eoreinformationestorageeanderetrievalesyst
DirectoreofeLearningeSolutions:eMat
ems,eexcepteasepermittedeundereSectione107eore108eofethee1976eUnitedeS
theweKane
tateseCopyrighteAct,ewithoutetheepriorewrittenepermissioneofetheepublis
SenioreAcquisitionseEditor:eSherryeDickinson her.
eManagingeEditor:eMaraheBellegarde
ProducteManager:eNatalieePashoukos e e e e e e e e
CengageeLearningeCustomere&eSaleseSupport,e1-800-354-9706
eEditorialeAssistant:eAnthonyeSouz
Forepermissionetoeuseematerialefromethisetexteoreproduct,esub
a miteallerequestseonlineeatecengage.com/permissionseFurthe
ViceePresident,eMarketing,eCareereEducatione& repermissionsequestionsecanebeeemailedetoepermissionreq
eTrainingeSolutions:eJennifereAnneBaker
MarketingeDirector:eWendyeMapstoneeSe
nioreMarketingeManager:eKristineMcNaryeMa LibraryeofeCongresseControleNumber:e2011920100
rketingeCoordinator:eEricaeRopitzkyeProdu eISBN-13:e978-1-4354-4816-2
ctioneDirector:eCarolyneMillereProduction ISBN-10:e1-4354-4816-2
Manager:eAndreweCrouth
e
ContenteProjecteManagement:ePreMediaGlo Delmar
bal 5eMaxwelleDrive
SenioreArteDirector:eDavideArsenault CliftonePark,eNYe12065-
2919eUSA
CengageeLearningeproductseareerepresentedeineCanadaebyeNelso
neEducation,eLtd.
Foreyourecourseeandelearningesolutions,evisitedelmar.cengage.com
Visiteourecorporateewebsiteeatecengage.com
NoticeetoetheeReader
Publisheredoes enotewarranteoreguaranteeeanyeofetheeproducts edescribedehereineoreperformeanyeindependenteanalysiseineconnection ewitheany eofetheeproducteinformationec
on-
e tainedeherein.ePublisheredoesenoteassume,eand eexpresslyedisclaims,eanyeobligationetoeobtaineandeincludeeinformationeotherethanethateprovidedetoeitebyetheemanufacture
r.eThee readereiseexpresslyewarnedeto econsidereandeadopteallesafetyeprecautionsethatemightebeeindicatedebyetheeactivitiesedescribedehereineandetoeavoideallepotentialehaz
ards.eByefollow-
e ingetheeinstructionsecontainedeherein, etheereader ewillinglyeassumes ealleriskseineconnectionewithesucheinstructions. eTheepublisheremakesenoerepresentations eorewarranties
eofeanye kind,eincluding ebutenotelimited eto,ethe ewarrantieseofefitnesseforeparticular epurpose eoremerchantability, enoreare eany esucherepresentations eimplied ewith erespecteto e
the ematerialesete fortheherein,eand etheepublisheretakes eno eresponsibility ewitherespectetoesuchematerial.eTheepublishereshallenotebeeliable eforeany especial, econsequential, eo
reexemplaryedamagese resulting,einewholeeorepart,efrometheereaders’euseeof,eorerelianceeupon,ethisematerial.
PrintedeinetheeUnitedeStateseofeAmericae
1e2e3e4e5e6e7e15e14e13e12e11
e e e
e e e e e e e e e e e e e e e e e e
,Thiseiseaneelectroniceversioneofetheeprintetextbook.eDueetoeelectronicerightserestrictions,
someethirdepartyecontentemayebeesuppressed.eEditorialereviewehasedeemedethateanyesuppressedecont
entedoesenotemateriallyeaffectetheeoverallelearningeexperience.eTheepublisherereservesetheerightetoere
moveecontentefromethisetitleeateanyetimeeifesubsequenterightserestrictionserequireeit.eForevaluableeinf
ormationeonepricing,epreviouseeditions,echangesetoecurrenteeditions,eandealternateeformats,epleaseevi
sitewww.cengage.com/higheredetoesearchebyeISBN#,eauthor,etitle,eorekeywordeforematerialseineyoure
areaseofeinterest.
, e
ParasitologyeforeMedicaleandeClinicaleLab ©e2012eDelmar,eCengageeLearning
oratoryeProfessionals
ALLeRIGHTSeRESERVED.eNoeparteofethiseworkecoveredebyetheecopyrigh
JohneW.eRidley tehereinemayebeereproduced,etransmitted,estoredeoreusedeineanyeform
ViceePresident,eEditorial,eCareereEducatione& orebyeanyemeansegraphic,eelectronic,eoremechanical,eincludingebutenotel
eTrainingeSolutions:eDaveeGarza
imitedetoephotocopying,erecording,escanning,edigitizing,etaping,eWebedis
tribution,einformationenetworks,eoreinformationestorageeanderetrievalesyst
DirectoreofeLearningeSolutions:eMat
ems,eexcepteasepermittedeundereSectione107eore108eofethee1976eUnitedeS
theweKane
tateseCopyrighteAct,ewithoutetheepriorewrittenepermissioneofetheepublis
SenioreAcquisitionseEditor:eSherryeDickinson her.
eManagingeEditor:eMaraheBellegarde
ProducteManager:eNatalieePashoukos e e e e e e e e
CengageeLearningeCustomere&eSaleseSupport,e1-800-354-9706
eEditorialeAssistant:eAnthonyeSouz
Forepermissionetoeuseematerialefromethisetexteoreproduct,esub
a miteallerequestseonlineeatecengage.com/permissionseFurthe
ViceePresident,eMarketing,eCareereEducatione& repermissionsequestionsecanebeeemailedetoepermissionreq
eTrainingeSolutions:eJennifereAnneBaker
MarketingeDirector:eWendyeMapstoneeSe
nioreMarketingeManager:eKristineMcNaryeMa LibraryeofeCongresseControleNumber:e2011920100
rketingeCoordinator:eEricaeRopitzkyeProdu eISBN-13:e978-1-4354-4816-2
ctioneDirector:eCarolyneMillereProduction ISBN-10:e1-4354-4816-2
Manager:eAndreweCrouth
e
ContenteProjecteManagement:ePreMediaGlo Delmar
bal 5eMaxwelleDrive
SenioreArteDirector:eDavideArsenault CliftonePark,eNYe12065-
2919eUSA
CengageeLearningeproductseareerepresentedeineCanadaebyeNelso
neEducation,eLtd.
Foreyourecourseeandelearningesolutions,evisitedelmar.cengage.com
Visiteourecorporateewebsiteeatecengage.com
NoticeetoetheeReader
Publisheredoes enotewarranteoreguaranteeeanyeofetheeproducts edescribedehereineoreperformeanyeindependenteanalysiseineconnection ewitheany eofetheeproducteinformationec
on-
e tainedeherein.ePublisheredoesenoteassume,eand eexpresslyedisclaims,eanyeobligationetoeobtaineandeincludeeinformationeotherethanethateprovidedetoeitebyetheemanufacture
r.eThee readereiseexpresslyewarnedeto econsidereandeadopteallesafetyeprecautionsethatemightebeeindicatedebyetheeactivitiesedescribedehereineandetoeavoideallepotentialehaz
ards.eByefollow-
e ingetheeinstructionsecontainedeherein, etheereader ewillinglyeassumes ealleriskseineconnectionewithesucheinstructions. eTheepublisheremakesenoerepresentations eorewarranties
eofeanye kind,eincluding ebutenotelimited eto,ethe ewarrantieseofefitnesseforeparticular epurpose eoremerchantability, enoreare eany esucherepresentations eimplied ewith erespecteto e
the ematerialesete fortheherein,eand etheepublisheretakes eno eresponsibility ewitherespectetoesuchematerial.eTheepublishereshallenotebeeliable eforeany especial, econsequential, eo
reexemplaryedamagese resulting,einewholeeorepart,efrometheereaders’euseeof,eorerelianceeupon,ethisematerial.
PrintedeinetheeUnitedeStateseofeAmericae
1e2e3e4e5e6e7e15e14e13e12e11
