75-97% of beryllium-exposed workers who develop Chronic Berylliosis have a common HLA-DPB1 gene variant versus 30-45% of beryllium exposed workers who do not develop the disease.
Chronic berylliosis is a granulomatous disease caused due to beryllium exposure. Its symptoms include cough, fever, night sweats and fatigue.
The HLA-DPB1 gene belongs to a group of MHC genes called MHC class II. MHC class II genes provide information for synthesizing proteins that are present on the surface of certain immune system cells. These proteins attach to protein fragments or peptides outside the cell.
A definitive diagnosis of berylliosis is based on occupational history, positive blood or bronchoalveolar lavage (BAL) beryllium lymphocyte proliferation test (BLPT) and granulomatous inflammation on lung biopsy.
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The cell is most likely in: <span>a plant cell in the process of cytokinesis.</span>
A. TRUE
These are grouped as the term "gonadotropins" because they affect the gonads.
Answer:
2.23 atoms
Explanation:
In this question, we first need to change the mass of Nitrogen to moles by using the formula;
mole = mass ÷ molar mass
Molar mass of Nitrogen = 14g/mol
Mass = 5.2x10^-23 grams
mole = 5.2x10^-23 ÷ 14
mole = 0.371 × 10^-23
mole = 3.71 × 10^-24 mol
Number of atoms in Nitrogen atom = 3.71 × 10^-24 mol × 6.02 × 10^23 atoms (avagadro constant)
= 22.3342 × 10^(-24+23)
= 22.33 × 10-¹
= 2.233 × 10°
= 2.23 atoms