Treating, curing and preventing diseases

• White blood cells kill pathogens by consuming them, producing antibodies and producing antitoxins
• The skin acts as a barrier to pathogens.
• The stomach produces hydrochloric acid to kill bacteria.
• Antibiotics are drugs that destroy or stop the growth of bacteria.
• Mucus traps pathogens.
• Vaccinations involve injecting small amount of dead pathogens.
• What are advantages of vaccines? 


  They helped control communicable diseases that were common in the UK and big outbreak of disease are prevented.
• what are disadvantage of vaccines?


  They don't always work and you could have a bad reaction to it however it is very rare.
• Antibiotics kill or prevent the growth of bacteria.
• Some bacteria are resistant to antibiotic as they can mutate and not be killed by an antibiotic.
• Aspirin is a painkiller and was developed from willow bark.
• Digitalis is used to treat heart conditions and it is developed from foxgloves.
• Penicillin is made from Penicillium mold.
• Alexander Fleming found penicillin.
• In preclinical testing, the drug is tested on animals to see if it is safe and effective.