GENERAL HISTOLOGY

INTRODUCTION

MICROSCOPE PARTS MAGNIFICATION RESOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which statement describes the best procedure to determine if a vaccine for a disease in a certain bird species is effective?
A
Vaccinate 100 birds and expose all 100 to the disease.
B
Vaccinate 100 birds and expose only 50 of them to the disease
C
Vaccinate 50 birds, do not vaccinate 50 other birds, and expose all 100 to the disease
D
Vaccinate 50 birds, do not vaccinate 50 other birds, and expose only the vaccinated birds to the disease.
Explanation: 

Detailed explanation-1: -So the correct answer is “ Vaccines are preventive means to fight diseases".

Detailed explanation-2: -Definition of Terms Vaccine: A preparation that is used to stimulate the body’s immune response against diseases.

Detailed explanation-3: -Vaccines contain dead or weakened microbes of a particular disease. When a vaccine is introduced into a healthy body, the body fights and kills them by producing suitable antibodies. These antibodies remain in the body and protects it from the microbe when it invades the body again.

Detailed explanation-4: -Vaccines give you immunity to a disease without you getting sick first. They are made using killed or weakened versions of the disease-causing germ or parts of the germ (called antigens). For some vaccines, genetic engineering is used to make the antigens used in the vaccine.

There is 1 question to complete.