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.
Inside supernovae and black holes it is hot enough to fuse atoms together to create the heavier elements - astronomical temperatures. Our sun, even at its hottest, would not ever be near supernova temperatures. Though we have no way of knowing really how hot existence was at the point of the Big Bang... (for further information, I recommend reading Bill Bryson's Short History of Nearly Everything).