...A chill wind was blowing that nipped himsharply and bit with especial venom into his wounded shoulder... 
Jack London 「The Call of the Wild」
...None of these uses of venom has become widely accepted, and its value is questionable...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Also there is no direct relationship between size of snake and toxicity or amount of venom injected...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
..." Smith (1956:310) stated: "Unlike the copperhead, cottonmouths are pugnacious; their powerful jaws, long fangs, vicious disposition and potent venom make them a very dangerous animal...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The venom and poison apparatus have developed primarily as a means of causing rapid death in small animals that are the usual prey...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...A secondary function of the venom is to begin digestion of tissues of the prey...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Thus, venoms contain both toxic elements and non-toxic substances that promote rapid spreading of the venom through the body of the victim...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Allen and Swindell (1948:13) stated that cottonmouth venom rates third in potency, compared drop for drop to that of Micrurus fulvius and Crotalus adamanteus...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...contortrix), which he rated only slightly lower than cottonmouth venom...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...95, nearer Minton's earlier estimate, and rated cottonmouth venom as being twice as toxic as that of copperheads...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
... Possibly the venom of each species of snake has greatest effect on animals of the particular group relied on for food by the snake...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Likewise, the venom of most species of rattlesnakes would be expected to be more virulent when injected into mammals than when injected into lower vertebrates...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
... Allen (1937) injected several snakes with dried cottonmouth venom which was diluted with distilled water just before each injection...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...His studies indicated that snakes are not immune to venom of their own kind or to closely related species...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...One of the major problems in comparing the data on toxicity of venom in studies of this type is that no standard method of estimating toxicity has been used...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The venom action should be tested after 12 or more hours...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
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