School of Life Sciences | Ask A Biologist

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Ouch! Body Defense and Repair

An interview with biologist Doug Lake from the Arizona State University School of Life Sciences. Dr. Biology and his co-host Ramon Santos find out how something as simple as a paper cut can put our body defense to work.

Content Info | Transcript


MP3 download | 12MB

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Topic Time
Intro - 00:00
How is my body going to fix the cut on my finger? [Ramon] 02:08
Making the cut sticky - platelets 02:33
Making a scab. 03:14
Why did we put antibiotic ointment on the cut? [Dr. Biology] - bacteria 03:33
What if I couldn't put antibiotic on my cut? [Ramon] - white blood cells 04:16
What does the word "cancer" mean? [Ramon] 05:30
How do people get cancer? [Ramon] 07:38
Some people think cancer is in our DNA. 08:05
How many people have cancer? [Ramon] 08:36
Is cancer contagious? [Ramon] 09:18
Why do some people get cancer and some don't? [Ramon] 09:45
How do people know they have cancer? [Ramon] 11:02
How about using X-rays to find cancer? [Dr. Biology] 11:36
What happens to your lungs when you get cancer? 12:49
Cancer cells can escape - do they go to your ear too? [Ramon] 13:29
Can one relative pass it to another relative? [Ramon] 14:01
Does the skin of people with cancer change color? [Ramon] jaundice, melanoma 14:58
Do people with cancer lose their hair? [Ramon] chemotherapy 16:12
Does our body repair itself while we sleep? [Dr. Biology] 17:04
Are there foods you can eat to avoid cancer? [Ramon] 18:02
What are doing in your laboratory about cancer? CTL cells - attacking tumor cells. [Dr. Biology] 18:47
CTL cells can tell good cells from cancer cells. 19:45
Three questions 20:24
When did you first know you wanted be a scientist or biologist? 20:48
What would you be or do if you could not be a scientist? [Ramon] 21:25
What advice would you have for someone wanting to become a biologist? 22:06
Sign-off 22:54

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Ouch! Body Defense and Repair

Audio editor: Charles Kazilek

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Be part of Ask A Biologist

by volunteering, or simply sending us feedback on the site. Scientists, teachers, writers, illustrators, and translators are all important to the program. If you are interested in helping with the website we have a Volunteer page to get the process started.