Cada pregunta de este test está cronometrada.
Which of the following is considered a primary lymphoid organ:
Bone marrow
Lymph nodes
Spleen
Tonsils
Neutrophils recognize their target through :
Adhesion molecules
Interleukin receptors
MHC-restricted antigen presentation
Pattern recognition receptors
A low molecular weight substance can't induce immune response unless conjugated to carrier molecules is called
Antigen
Antigenic epitope
Hapten
Immunogen
The cell wall of Gram negative bacteria is formed of all the following layers except :
thin peptidoglycan
periplasmic space
outer lipopolysaccharides
teichoic acid
Which of these bacteria are naturally occurring with defective cell wall:
Mycoplasma
Chlamydia
Rickettsia
None of the above
