(Ch. 27.4) Many people are allergic to substances in the environment, such as ragweed pollen, as well as foods, such as peanuts. Which of these statements BEST describes an allergic reaction to one of these substances? (1 point) A. The substance is similar or identical to human antigens, and so it triggers an immune system response. B. The substance invades the body and causes damage to tissues, which triggers an immune system response. C. The substance does not directly harm tissues and is not a pathogen, but nevertheless triggers an inflammatory response. D. The substance invades the body and triggers a response from the respiratory system or digestive system, but not the immune system.
Answers: 3
Biology, 21.06.2019 15:50
Based on the results of this study, what questions remain unanswered? how can these questions guide future research
Answers: 3
Biology, 21.06.2019 23:00
Explain why process 2 is so important to sexual reproduction identify processes 1 and 3 state one difference between the cells produced by process 1 and cells produced by process 3
Answers: 3
Biology, 22.06.2019 03:30
Which type of respiration takes place when there is no oxygen present
Answers: 2
(Ch. 27.4) Many people are allergic to substances in the environment, such as ragweed pollen, as wel...
English, 22.07.2019 06:00
Social Studies, 22.07.2019 06:00
History, 22.07.2019 06:00
Social Studies, 22.07.2019 06:00