osteomalacia : Disease resulting in the _________ of bones usually caused by hormonal imbalance.
Fill in the missing word in the definition for the key term.
softening
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When a drug is given by inhalation, it is absorbed ________
A) through the stomach and intestine B) through the nasal cavity C) through the lungs D) through the breast milk
T-cell activation requires antigen being displayed in the context of an APC and interaction between co-stimulatory molecules on the APC and the T cell
In addition to these two signals, T-cell activity is often influenced by cytokines. Which of the following is an example of how cytokines can influence T-cell activity in the presence of MHC presentation and co-stimulatory ligand interaction? A. CD28 causes memory NK cells to be produced. B. CD8 triggers apoptosis in T cells that recognize self-antigens. C. IL-2 triggers T-cell proliferation. D. Opsonins recruit eosinophils to present carbohydrate antibodies to naïve TC cells. E. TNF-? increases the production of IgM by activated T cells.
The body system that converts food into usable substances that provide energy is the:
(a) central nervous system (b) digestive system (c) endocrine system (d) respiratory system
Identify the suffix for toward.
A. -ad B. -stat C. -tropy D. -clast