Once infected cells have sensed an invading pathogen, they secrete molecules called cytokines and chemokines. Cytokines such as interferons are molecules that signal neighbouring cells and induce an antiviral state in them. These cells are then primed to resist an infection with the invading virus.
Answer:
To allow for the passage of light in a microscope.
Answer:
a. dates back to seventeenth century England
Explanation:
Health care data refers to the different records of events obtained in the hospitals. The recording and keeping of these data dates back to seventeenth century England. The events usually include mortality,natality,life expectancy information. Data of mortality caused by different types of diagnosed ailments are usually taken note of. This helps to ensure the proper planning in the health sector. The diseases which requires urgency as a result of its high prevalence are also taken note of for thorough handling and treatments.
