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Alja [10]
3 years ago
14

Why is diagnosing a parasite infection difficult? What factors make it challenging?

Biology
1 answer:
Sonja [21]3 years ago
5 0

Answer:The difficulty in developing vaccines against parasitic diseases is to identify (and produce) appropriate protective antigens because of the lack of complete understanding of the type of immune response required for protection.

Explanation:

I hope this kinda helps.

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The following are the steps for B-cell activation. The steps are in an incorrect order.
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Answer:

4. B cells become activated by interacting with helper T cells.  

1. B cells display antigens in MHC class II receptors on the cell surface.  

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3.B cells rearrange their DNA to create a unique B-cell receptor.  

5. B cells undergo clonal expansion.

6. B cells digest antigens that bind to the antibodies on their surface.

Explanation:

B-cells get activated by interacting with helper T cells when they bind to the antigen to receptors i.e (MHC class II receptors on the cell surface) on the surface of the cell. Series of activities such as release by plasma cells which cause rearrangement of B cells causes the cell to divide and proliferate. The process through which daughter cells arise from a parent cell called clonal expansion.

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Electric current is produced when ___ move(s) through a ___.
sleet_krkn [62]

Answer:

Electric current is produced when a changing magnetic field is applied to a conductor, an electromotive force (EMF) is produced, thus causing a suitable path.

Explanation:

np :)

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