An exoantigen test is useful in species determination, and DNA analysis can also be performed.
2.
To ease the identification of fungus producing sterile mycelium such as " S . vasiformis " and " A . elegans ", exoantigen test has been developed.
3.
The first described natural reservoir of " H . duboisii " was a bat cave in Nigeria that yielded samples of the dirt mixed with guano testing positive for " H . duboisii " exoantigen.
4.
For " S . vasiformis ", even though exoantigen testing is helpful with positive test, it is rarely used because of the high false-negative rate, requiring confirmation by sporulating morphology with all the negative tests . see cultural characteristics.