TY - GEN AU - Macfall,J S AU - Pfeffer,P E AU - Rolin,D B AU - Macfall,J R AU - Johnson,G A TI - Observation of the Oxygen Diffusion Barrier in Soybean (Glycine max) Nodules with Magnetic Resonance Microscopy SN - 0032-0889 PY - 2010///0629 N1 - Publication Type: Journal Article UR - https://doi.org/10.1104/pp.100.4.1691 ER -