DNA of harmless bacteria or viruses.
the RNA of the defective genes
Microorganisms can be used as vaccines. Some microbes can be genetically engineered to produce components of vaccines.
The can produce antigens useful in making vaccines without the harmful parts of the original disease organism.
Vaccines are for the purpose of disease prevention. Vaccination is the process of introducing harmless pathogens to the body for a response trigger without an actual infection. Vaccines are either composed of: *dead pathogens *weakened pathogens *protiens from the target pathogens
Edible vaccines are vaccines produced in plants genetically modified through bioengineering.
Vaccines.
Genetically engineered proteins are important to many areas of human life such as agriculture, research, medicine and industry. Research is especially necessary for the possible cure of diseases that threaten every culture on Earth. Pharmaceutical companies can utilize the insulin and vaccines so necessary in developing countries.
Some vaccines are really just a weakened form of the disease. These are called attenuated vaccines.
Vaccines do not destroy pathogens, they give the immune system antibodies so it can destroy a pathogen before it causes an infection. Vaccines do exist for some bacterial infections.
vaccines
vaccine
Conventional vaccines consist of whole pathogenic organisms, which may either be killed or live vaccines; the virulence of pathogens is greatly reduced in attenuated vaccines. This is classified into 2 categories :a)Live or attenuated vaccines; (eg : BCG vaccine)b)Inactivated vaccines (eg : Salk polio & Pertussisvaccines)