once selected,options of enviornment-dry/wet and cold/hot ,both will be presented,
then there will be options-which chemical or cell to release, (plz know which chemical will do what it)
options-  The immune system involves cells from two major lineages including 
lymphoid cells derived from a lymphoid progenitor such as
natural killer (NK) cells
T-lymphocytes
B-lymphocytes
myeloid cells derived from a myeloid progenitor such as
mast cells
basophils
neutrophils
eosinophils
monocytes
macrophages