REAGENT or RESOURCE	SOURCE	IDENTIFIER
Antibodies
rabbit anti-Keratin 14 Polyclonal	BioLegend	Cat# 905301 RRID: AB_2565048
rat anti-CD324 (E-cadherin) DECMA-1	Affymetrix eBioscience	Cat# 14-3249-82 RRID: AB_1210458
Alexa Fluor 488 donkey anti-rat IgG (H+L)	Thermo Fisher scientific	Cat# A21208 RRID: AB_2535794
Alexa Fluor 568 donkey anti-rabbit IgG (H+L)	Thermo Fisher scientific	Cat# A10042 RRID: AB_2534017
Chemicals, Peptides, and Recombinant Proteins
Collagenase A	Roche Diagnostics	Cat# 10 103 578 001
Hyaluronidase	Sigma-Aldrich	Cat# H3884
DAPI solution (1mg/ml)	Thermo Fisher scientific	Cat# 62248
Vectashield Hard set	Vector Laboratories	Cat# H-1400
Recombinant Mouse FGF-10	R&D Systems	Cat# 6224-FG-025
Recombinant Mouse TGF-β1	R&D Systems	Cat# 7666-MB-005
Affi-Gel Blue Gel	Bio-rad	Cat# 1537301
Critical Commercial Assays
Click-iT EdU Alexa Fluor 647 Imaging Kit	Thermo Fisher Scientific	Cat# C10340
Experimental Models: Organisms/Strains
FVB/NJ	Taketo et al., 1991	https://www.jax.org/strain/001800
MMTV-Cre (FVB)	Wagner et al., 1997	https://www.jax.org/strain/003553
LSL-YFP (FVB)	N/A	https://www.jax.org/strain/006148