What's the difference between recombinant DNA technology and PCR?

[Bec]

Okay so an example is when your producing erythropoietin using the two different methods. Do they do the same thing just different ways or do they work together to produce more erythropoietin? I.e. does PCR create more of it (because only a small amount can be extracted) and then recombinant DNA technology clones it or do both processes clone the gene for insertion into the body? Any help is greatly appreciated.