Summary: This episode is about the amazing response that our immune system launches to defend us against the invasion of pathogens that we discussed in last week's episode Biology Hotline Voicemail: 00111 206-337-8461 (call costs $1) Free voicemail http://biologyoracle.podomatic.com (click the orange button) email: biologypodcast@gmail.com forum: www.facebook.com/biologypodcast Douchy's Website: http://
