Botulinum toxin is a blocking agent preventing the release of certain neurotransmitters, specifically Acetylcholine, from the endings of the motor nerves (#Kennedy, 2002 and (#Kent, 1998). Botulinum toxin has a light chain and a heavy chain, each of which contributes to the toxicity.
Making the world better, one answer at a time. The geography of Greece is very mountainous with many valleys around them making it hard for other city states to come and attack them. The geography of Greece is very mountainous with many valleys around them making it hard for other city states to come and attack them.
Geography of the Odyssey. Map of Homeric Greece (right-click on map to enlarge). Events in the main sequence of the Odyssey (excluding the narrative of Odysseus's adventures) take place in the Peloponnese and in what are now called the Ionian Islands (Ithaca and its neighbours).