Transcript BLOOD TYPES

BLOOD TYPES
On a cold day in 1667, a renegade
physician named Jean Denis transfused
calf's blood into one of Paris's most
notorious madmen. In doing so, Denis
angered not only the elite scientists who had
hoped to perform the first animal-to-human
transfusions themselves, but also a host of
powerful conservatives who believed that
the doctor was toying with forces of nature
that he did not understand. Just days after
the experiment, the madman was dead, and
Denis was framed for murder.
From:
Blood Work: A Tale of Medicine and Murder in
the Scientific Revolution
1901 - Austrian Karl
Landsteiner discovered
human blood groups
Even animals have blood types
Blood Type is Controlled by 3 Alleles
4 Possible Blood Types
Alleles: A, B, O
A & B are codominant
O is recessive
Genotypes
Type A =
AA or AO
Type B =
BB or BO
Type AB =
AB
Type O =
OO
Blood types
Mom is type O
Dad is type A
Daughter is type A
Son is type O
Show the punnett
square of this family.
Why is O the “universal donor?
TYPE A
TYPE B
TYPE AB
TYPE O
Rh Factor
A person can either be Rh + or Rh –
(positive is dominant)
Erythroblastosis Fetalis
http://www.chw.org/medical-care/fetalconcerns-center/conditions/infantcomplications/hydrops-fetalis-erythroblastosisfetalis/
Blood Type Test
Blood Safety
EXAMPLES OF BLOODBORNE PATHOGENS
HEPATITIS B (HBV)
HEPATITIS C (HCV)
HUMAN
IMMUNODEFICIENCY
VIRUS (HIV)
MALARIA
OTHER POTENTIALLY
INFECTIOUS MATERIALS
1. Wear gloves
2. Dispose of items that
have been contaminated
(tissues, needles, bandaids) in appropriate
containers
3. Do not “horse around”
4. Treat every person as if
they may be carrying an
infectious disease!
Avoid contact with
blood that is not
your own!