Edward Jenner inferred that a person who once had small pox cannot have it once again. So something is there in these persons which grows after the initial infection which interferes with the secondary infection resisting it.
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Edward Jenner is called the Father of Vaccination. Jenner noticed that the milkmaids who deal with the cows all the time don't generally suffer from the cowpox or small pox. Then as an Experiment, he took some sample from the pustules of the cow having pox and then cleaned it and injected the sample into a healthy child. Then when everyone of the locality suffered from the same disease, that child remained healthy. So that lead to infer that there are something in the pustule which lead to resist the secondary infection of this disease. So this lead to the invention of vaccines.
Lysosomes, which is the organelle that cleans the cell
Answer:
c. 2nd metacarpal
Explanation: is correct edg
Answer:
The genotype represents two alleles.
Explanation:
The genotype represents two alleles. Because each pair of alleles represents the genotype of a specific gene.
Answer:
The large intestines, liver, body, and lungs are included
Explanation:
Excretion is the mechanism by which waste and excess water are eliminated from the skin. It's one of the key ways that homeostasis is maintained by the body. Although kidneys are always the key excretion organs, a number of organs are also excreting waste. The large intestines, liver, body, and lungs are included. The excretory system is made up of all of these organs of excretion, along with kidneys.
