Background: The body's second line of defense against pathogens includes the inflammatory response. If bacteria enter the skin through a scrape, the area may become red, warm, and painful. These are signs of inflammation. Inflammation is one way the body reacts to infections or injuries. Inflammation is caused by chemicals that are released when skin or other tissues are damaged. The chemicals cause nearby blood vessels to dilate, or expand. This increases blood flow to the damaged area, which makes the area red and slightly warm. The chemicals also attract white blood cells called neutrophils to the wound and cause them to leak out of blood vessels into the damaged tissue.

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student studied more about pathogens?
Answer: Dan

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student studied less about pathogens?
Answer: Bob

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student studied more about the effects of bacteria entering the skin through a scrape?
Answer: Dan

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student studied less about the effects of bacteria entering the skin through a scrape?
Answer: Bob

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student learned that the infected skin area may become red?
Answer: Dan

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student didn't learn that the infected skin area may become red?
Answer: Bob

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student didn't learn that the infected skin area may become warm?
Answer: Bob

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student learned that the infected skin area may become warm?
Answer: Dan

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student learned that the infected skin area may become painful?
Answer: Dan

Situation: Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future.

Question: Which student didn't learn that the infected skin area may become painful?
Answer: Bob

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied more about the body's second line of defense against pathogens?
Answer: Alpha

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied less about the body's second line of defense against pathogens?
Answer: Omega

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied less about signs of inflammation?
Answer: Omega

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied more about signs of inflammation?
Answer: Alpha

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied more about bacteria entering the skin through a scrape?
Answer: Alpha

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied less about bacteria entering the skin through a scrape?
Answer: Omega

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied less about chemicals that are released when skin or other tissues are damaged?
Answer: Omega

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied more about chemicals that are released when skin or other tissues are damaged?
Answer: Alpha

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied more about chemicals causing nearby blood vessels to dilate, or expand?
Answer: Alpha

Situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost.

Question: Which team studied less about chemicals causing nearby blood vessels to dilate, or expand?
Answer: Omega

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned more about signs of inflammation?
Answer: Bill

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned less about signs of inflammation?
Answer: Niles

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned less about skin becoming red?
Answer: Niles

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned more about skin becoming red?
Answer: Bill

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned more about the infected area becoming warm?
Answer: Bill

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned less about the infected area becoming warm?
Answer: Niles

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned less about the infected area becoming painful?
Answer: Niles

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned more about the infected area becoming painful?
Answer: Bill

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned more about the releasing of chemicals when the skin is damaged or injured?
Answer: Bill

Situation: Two medical students learned about the human body's defense against pathogens. Niles learned about the body's first line of defense, while Bill  learned more about the inflammatory response.

Question: Which student learned less about the releasing of chemicals when the skin is damaged or injured?
Answer: Niles