MCB 2010 Exam 2 Questions with Complete Solutions 100% Solved| Grade A+
BSL-1 - Bacillus subtilis
- E. coli K12
- Staphylococcus epidermidis
BSL-2 - Staphylococcus aureus
- Herpes simplex viruses
- most flu strains
- Clostridium tetani
- Salmonella spp.
BSL-3 - Coxiella burnetiid
- Mycobacterium tuberculosis
- certain flu strains
- St. Louis encephalitis virus
BSL-4 - ebola virus
- marburg viruses
- agents with unknown modes of transmission
first-line defenses help prevent pathogen entry
mechanical barriers - rinse, flush, trap pathogens to limit spread
- include: mucous membranes
chemical barriers directly attack invaders or creates environment that limits pathogen
survival
, physical barriers block pathogen entry
second-line defenses assorted molecular factors and leukocytes
primary lymphoid tissues - production and maturation of RBCs, leukocytes and platelets
- thymus and red bone marrow
secondary lymphoid tissues - filter lymph and sample surrounding areas
- lymph nodes
- spleen
- MALT
neutrophils - most numerous WBC
- first recruited to injured tissue
- release AMPs and enzymes
eosinophils - diverse enzymes and antimicrobial toxins
- respond to allergens or parasites
basophils - degense molecules
- presence of histamine
- combat parasitic infections and involved in allergic response
mast cells - release histamine
BSL-1 - Bacillus subtilis
- E. coli K12
- Staphylococcus epidermidis
BSL-2 - Staphylococcus aureus
- Herpes simplex viruses
- most flu strains
- Clostridium tetani
- Salmonella spp.
BSL-3 - Coxiella burnetiid
- Mycobacterium tuberculosis
- certain flu strains
- St. Louis encephalitis virus
BSL-4 - ebola virus
- marburg viruses
- agents with unknown modes of transmission
first-line defenses help prevent pathogen entry
mechanical barriers - rinse, flush, trap pathogens to limit spread
- include: mucous membranes
chemical barriers directly attack invaders or creates environment that limits pathogen
survival
, physical barriers block pathogen entry
second-line defenses assorted molecular factors and leukocytes
primary lymphoid tissues - production and maturation of RBCs, leukocytes and platelets
- thymus and red bone marrow
secondary lymphoid tissues - filter lymph and sample surrounding areas
- lymph nodes
- spleen
- MALT
neutrophils - most numerous WBC
- first recruited to injured tissue
- release AMPs and enzymes
eosinophils - diverse enzymes and antimicrobial toxins
- respond to allergens or parasites
basophils - degense molecules
- presence of histamine
- combat parasitic infections and involved in allergic response
mast cells - release histamine
