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1.................releases histamine inflammatory reactions

2.................increases during allergic reactions.

3.................increases in number during prolonged infections.

4.Ann claims that Tim is the father of her child .Ann`s blood type is O negative.Her baby boy has type A Positive blood.Tim`s blood type is found to be B positive.Could he be the father of her child?......If not,what blood type would the father be sxpected to have?....

Reply 1

Comp_Genius

i thin kthe first one is basophil, not too sure.

Reply 2

dinesh

1 ) Mast cells
For the last I would think something along the lines of antibodies or B cells specifc to that infection ( plasma cells)
For 2, Histamine?

Reply 3

at least lara

4. the answer is no and the father should have A positive blood (o is recessive)

Reply 4

Comp_Genius

http://www.hon.ch/Library/Theme/Allergy/Glossary/basophil.html

Basophil
Granular Leukocyte
A type of leukocyte (white blood cell), also called a granular leukocyte, filled with granules of toxic chemicals, that can digest micro-organisms. Basophils are responsible for the symptoms of allergy. Despite similarities, basophils appear to be a distinct cell type from mast cells .

Basophils are derived from bone marrow progenitors (psc) and contain granules that bind basic dyes. They are capable of synthesizing many of the same mediators as mast cells . Both express the same high affinity for Fce receptors (FceRI) and can be triggered by antigen binding to IgE . Basophils, like other inflammatory granulocytes , enter tissues only when they are recruited into inflammatory sites. Basophils, like neutrophils , express a number of adhesion molecules important for homing, such as LFA-1 (CD11aCD18), Mac-1 (CD11bCD18) and CD44.

When basophils are triggered, they release two kinds of mediators :

1. Preformed granule-associated mediators such as histamine , serotonin , bradykinin , heparin , cytokines .
2. Newly-generated mediators , prostaglandins and leukotrienes , made from arachidonic acid in surrounding tissues.