The snake with the largest venom glands is probably the United States's own eastern diamondback rattlesnake (although the gaboon viper must be close), with glands that can hold up to ten milliliters or more of venom.
(The snake with the largest venom glands; is probably; the United States's own eastern diamondback rattlesnake) (the gaboon viper; must be; close) (glands; can hold up; )
The snake with the largest venom glands the gaboon viper glands
is probably must be can hold up
the United States's own eastern diamondback rattlesnake
close