Hi, You can use the instruction in your preparation kit. If you do not use any kits, see the instruction of your manual then homogenate the sample in the extraction buffer. If it is confusing, please send me your manual.
Hello you would have to isolate and homogenize the antennae tissue. You can probably use one of Qiagen's kits ti do the extraction. Magnetic bullet blenders or Omni Homogenizers could be used with Phenol/Chloroform to extract the RNA.
If you want to investigate expression patterns you would then have to run a Taqman Experiment on the Extracted RNA using known genes that express in the antennae.
A simple way would be to freeze your sample in liquid nitrogen and grind up the frozen tissue. A 1.5 ml tube and a pestle works well for this. Add Trizol reagent to the sample. store at -80C.