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Expression of podocalyxin mRNA in developing pronephric glomerulus. podocalyxin mRNA is detected by in situ hybridization in the paired glomerular primordia at 24 and 34 hpf (arrowheads in A, B). Glomerular primordia fuse at the midline to form a glomerulus by 2 dpf, and podocalyxin expression continues in the glomerulus to 2 and 3 dpf (arrowheads in C, D). Asterisks indicate the notochord. Bar scale, 10 μm.
