your source writes:
Bacterial protein toxins are the most powerful human poisons known and retain high activity at very high dilutions. The lethality of the most potent bacterial exotoxins is compared to the lethality of strychnine, snake venom, and endotoxin in Table 1 below.
Say, why would they compare toxins from bacteria with those of snakes if those two had the same source?
In fact :
Saliva is produced in and secreted from salivary glands. The basic secretory units of salivary glands are clusters of cells called an acini. These cells secrete a fluid that contains water, electrolytes, mucus and enzymes, all of which flow out of the acinus into collecting ducts.
from
Human Anatomy
and :
Easy questions to ask—very difficult to answer succinctly and simply. Snake venom is saliva, a highly modified saliva, and is produced by modified saliva glands.
from :
http://library.thinkquest.org/C007974/2_6sve.htm
proves you that you are in fact totally wrong (what a surprise !!)
Serpent venom is produced the same way saliva is, meaning mainly through cells called acini. So, will you retract your wrong statements or avoid the subject?