AJ2 portfolio · Environmental health
The ImmuneCo
Health that withstands the world.
AJ2 is an angel investor in The ImmuneCo. AJ2 is the investment vehicle of brothers Julien Lepleux and Adrien Lepleux.
What The ImmuneCo is building
The ImmuneCo is an environmental-health company whose first storefront is MoldCo. MoldCo provides access to lab testing and care for people concerned about mold exposure.
The broader ImmuneCo vision extends beyond mold to environmental exposures including toxins and microplastics. MoldCo is the first step, with testing and treatment focused on mold exposure.
A founder connection
Julien Lepleux, one of AJ2’s two partners, co-founded MoldCo and worked on its growth.
Company information: MoldCo: current testing and care services ↗. Reviewed September 2026.