2.Dictation-PartB

[ar:2.Dictation] 
[ti:PartB] 
[00:08.76]1. Pediatricians are concerned  
[00:11.76]with the health of infants 
[00:13.59]children and teenagers 
[00:15.83]They specialize in the  
[00:17.10]diagnosis and treatment
[00:19.23]of a variety of ailments  
[00:20.80]specific to young people 
[00:22.78]and track their patients'  
[00:24.46]growth to adulthood
[00:26.34]Their work also involves treating  
[00:28.32]day-to-day illnesses that are common 
[00:31.11]to children minor injuries
[00:33.45]infectious diseases and immunizations 
[00:39.09]2. Early exposure to germs 
[00:42.67]strengthens the immune system 
[00:44.96]That means letting children 
[00:46.53]get a little dirty 
[00:47.80]might be good for their health
[00:49.17]later in life 
[00:50.70]The study involved laboratory mice
[00:53.54]It found that adult mice  
[00:55.16]raised in a germ-free environment 
[00:57.55]were more likely to develop allergies 
[00:59.58]asthma and other autoimmune disorders