A 23-year-old medical student who had four injections of diphtheria, pertussis, and tetanus (DPT) in her first year of life and a booster at age 12 years but no subsequent tetanus immunization, is bitten by a mouse while doing an experiment. She should be given:

(A) tetanus toxoid, which will passively immunize her.
(B) tetanus antitoxin(equine), which will passively immunize her.
(C) tetanus immuneglobulin(human), which will passively immunize her.
(D) tetanus toxoid, which will actively immunize her.
(E) tetanus immune globulin (human), which will stimulate an anamnestic response.

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.