potting mix from plant P17
Microbial samples were collected from outdoor-sourced soil, potting mix, leaves of five different indoor plant types, and forearm skin of human subjects before and after transferring microbial propagules from soil and plant leaves. Sterile nylon-flocked swabs were used to collect microbial communities from growing media, plant leaves, and forearm skin, and to transfer microbial propagules from environmental sources to human skin. Post-transfer skin  samples were collected at 2, 4, 8, and 24-hours post-transfer, and after washing with soap and water.