Spore syringes are very familiar among researchers, because they represent a medium that stores spores from different mushroom strains for a longer time. There are millions of mushroom spores in only one syringe, floating in a sterile solution and waiting to be inoculated in a fertile substrate and grow into the mushrooms that will be studied.
Mushroom syringes filled with quality microscopic mushroom spores are convenient options because they are easy to use and store. Spores can be easily contaminated, but they will resist much better in this liquid and sterile environment. They are sealed with a cap and can be stored in the fridge until you are ready to inoculate a substrate especially developed for cultivating mushrooms (the substrate requirements are different for medicinal, edible or psilocybe mushroom strains!)
Just 3 milliliter of the spore solution in a syringe is enough to colonize 1 liter of substrate, so you should be able to inoculate about 7 liters of substrate with a 20ml syringe! The mycelium is expected to start growing in just a few days, provided that everything goes by the book. Soon, you should be able to have a spore print which will be very useful in your research.