Things to Do Today
• Observe Urinalysis Plates– Note hemolysis & Count Colonies on BAP– Observe EMB plate
• Blood Lecture
• Blood Typing
• Differential WBC Count
• Observe Parasitic Blood Slides
Whole Blood
• Plasma
• Buffy coat
• Hematocrit
RBC Disorders
• Anemias
-hemolytic
-Iron deficiency
-aplastic
-sickle cell
Polycythemia
Wikipedia Commons, used with permission
WBCs
WBCs
monocyte
lymphocyte
neutrophil eosinophil basophil
Wiley
WBCs
WebPath, used with permission
WBCs
lymphocyte monocyteMedicine USC, used with permission
Vs.
Leukocyte Disorders
• Leukemia
• Infectious mononucleosis
• Leukopenia
Formation of platelets
Hemolytic DZ of the Newborn
• Mom must be Rh (-)
• Father must be Rh (+)
• A child must be Rh (+)
• A subsequent child must be Rh (+)
Hemolytic DZ of the Newborn
Watch demo of Blood Smear
10 sec in dye
20-24 sec in rinse
Blood Parasites
• Trypanosoma cruzi Chaga’s disease
• Leishmania Leishmaniasis
• Plasmodium vivax Malaria
• Trypanosoma gambiense Sleeping sickness
Microbe Disease
Trypanosoma cruzi
Etiological Agent for Chaga’s disease
KM
1000x
Rhodnius: Vector for Chaga’s disease
AKA assassin bug; kissing bugKM
Blood Parasites
• Trypanosoma cruzi Chaga’s disease
• Leishmania Leishmaniasis
• Plasmodium vivax Malaria
• Trypanosoma gambiense Sleeping sickness
Microbe Disease
Leishmania Life Cycle
Leishmania
Vector: sandfly
KM
1000x
A Patient Suffering from leishmaniasis
leishmaniasis
DermAtlas, used with permission
leishmaniasis
DermAtlas, used with permission
leishmaniasis
DermAtlas, used with permission
leishmaniasis
Dermis.net, used with permission
leishmaniasis
Dermatology Image Atlas, used with permission
Blood Parasites
• Trypanosoma cruzi Chaga’s disease
• Leishmania Leishmaniasis
• Plasmodium vivax Malaria
• Trypanosoma gambiense Sleeping sickness
Microbe Disease
Malaria
• Causative agent: Protozoan Plasmodium
• One of the most severe of all parasitic diseases
• Endemic is most tropical areas
• Plasmodium are amoeboid, intracellular protozoa that infect erythrocytes and other tissues
• Transmitted by the female Anopheles mosquito
The Worldwide Incidence of Malaria
The life cycle of the malaria parasite Plasmodium
The “ring” stage of the malarial parasite Plasmodium falciparum
Seen as dark, circular structures within red blood cells
Malaria in RBCs
Plasmodium vivax
Malaria
KM
1000x
Blood Parasites
• Trypanosoma cruzi Chaga’s disease
• Leishmania Leishmaniasis
• Plasmodium vivax Malaria
• Trypanosoma gambiense Sleeping sickness
Microbe Disease
Trypanosoma gambiense
Sleeping Sickness
Vector: Tsetse flyKM
1000x
Blood Types
Type OType ABType A Type B
Anti A
antibodyAnti B
antibody