Hello, I am checking the inflammatory reaction that occurs when LPS is treated on BV2 microglia. When I treated LPS on BV2 cells, I confirmed a noticeable increase in IL-6 and I expected that JAK2 would be phosphorylated by LPS considering IL-6/JAK2/STAT3 axis, so I checked it through WB. However, I can't see the WB band at all. I can see total-JAK2, but I can't see the band at all on phospho-JAK2. Strangely, STAT3, the sub-signal of JAK2, was confirmed to be phosphorylated by LPS. But why can't JAK2 be confirmed.. Please help...