Class A (type D) CpG ODNs (CpG-A ODNs) contain a central palindromic phosphodiester (PO) CpG sequence and a PS-modified 3â poly-G tail. The poly G tails form intermolecular tetrads that result in high molecular weight ordered structures.
Why does a tornado form when cold and hot air meet? The collision of warm and cold air is not the direct cause of a tornado, nor is it absolutely necessary. When a cold air mass pushes into a warm air mass (this is called a câ¦old front) the warmer, less dense air is forced upwards.
Colden-area historical tornado activity is near New York state average. It is 66% smaller than the overall U.S. average. On 8/19/1970, a category F3 (max. wind speeds 158-206 mph) tornado 8.4 miles away from the Colden town center injured 3 people and caused between $50,000 and $500,000 in damages.