TY - RPRT TI - The 'Bayer bridges' confronted with results from improved electron microscopy methods. AU - E Kellenberger PY - 1990 DO - 10.1111/j.1365-2958.1990.tb00640.x UR - https://pubmed.ncbi.nlm.nih.gov/2201866/ ID - 2201866 ER -