In this task, you will be given sentences in which your task is to recognize the name of the organ of the body. An organ is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Although there might be several correct answers, you need to write one of them.

Example input: I have serious allergy in my left eye.
Example output: eye
Example explanation: Eye is an organ which has been affected, hence should be tagged.
Q:  Overexpression of SLAP - 2 in bone marrow macrophages partially suppressed the CSF - 1 - induced tyrosine phosphorylation and / or expression level of a approximately 80 kDa protein without affecting CSF - 1 - induced global tyrosine phosphorylation , or activation of Akt or Erk1 / 2 .
A:
bone