Biology A-Level
Physical barriers to pathogen entry
What Physical barriers to pathogen entry means in Biology A-Level, as defined for OCR.
Definition of Physical barriers to pathogen entry
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Reference: OCR
Defences such as the waxy cuticle, cellulose cell walls, bark, and stomatal closure or guard-cell responses that limit entry.
Topics that use Physical barriers to pathogen entry
Related terms
- active immunity
- Active immunity and memory cells
- agglutination
- Animal and recombinant sources
- Animal communicable diseases
- Antibody concentration
- Antibody function in immune defence
- Antibody specificity
Using Physical barriers to pathogen entry in the exam
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