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PHILADELPHIA — BioLabs, an incubator for life sciences companies, has signed a 30,151-square-foot lease expansion at The Curtis, a facility in Philadelphia’s Center City District that is a redevelopment of a historic publishing house. The tenant’s footprint is now 53,529 square feet, and the move-in is scheduled for early 2023. Other tenants at The Curtis, which also houses traditional office space, include Aro Biotherapeutics, IMVAX Inc. and Vivodyne. Keystone Development + Investment owns the property.