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Explain about the Pulse vaccination?
How many doses of a given vaccine, administered to what people and on what schedule, permit eradication or control of an infectious disease? Classical models referred just the effects of constant rates of vaccine administration. Inspired in part by the logistical and educational problems denoted by dispersed populations in developing countries, vaccine programs have turned to pulse vaccination strategies in which large cohorts of susceptible children are vaccinated in a period of days to weeks. Mathematical models of pulse vaccination illustrates that in addition to its logistical advantages, pulse vaccination may assist eradicate disease by driving disease for the moment to extremely low levels and by synchronizing epidemics in different populations, permitting for stochastic extinction of disease in the whole population.
Explain about Chlorophylls Chlorophylls are used as colourants in a range of foodstuffs and both natural chlorophyll (containing magnesium as the central metal ion) and 'coppe
Figure shows the flow of energy through the trees in a forest ecosystem.The numbers represent inputs and outputs of energy in kilojoules per m 2 per year. (a) (i) On Figure,
why they are called protozoa
Explain the Protection of erythrocytes and cell membrane? Protection of erythrocytes: Vitamin E protects erythrocytes from haemolysis by the production of oxidizing agents
Why can the consumption of molecular oxygen indicate the metabolic rate of aerobic organisms? Molecular oxygen (O2) consumption has direct relation to the cell metabolic rate i
What is the difference between analogous and homologous organs? The Characteristics of different species are said to be analogous when having the same biological function, for
Vertical Stratification - Tropical Rain Forest In a tropical rain forest, vertical stratification is very clearly seen. In addition to the different layers described above, th
Define the effect of SCFA on Sodium Absorption? SCFAs (short chain fatty acids) have a stimulatory effect on sodium absorption from colonic lumen. The unionized SCFA crosses th
Where do PGA and glycine gain entry respectively after being formed during photorespiration in plants? What occurs to them immediately after?
Why is it significant that exact copies of DNA are produced during replication? Producing exact copies make sure that when a cell divides, the offspring cells will receive the
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