replication fork processing replication restart replication fork restart recovery from replication fork arrest recovery from replication fork stalling biological_process replication fork processing at ribosomal DNA locus The process in which a DNA replication fork that has stalled is restored to a functional state and replication is restarted. The stalling may be due to DNA damage, DNA secondary structure, bound proteins, dNTP shortage, or other causes. replication fork processing at rDNA locus recovery from replication fork arrest at rDNA locus recovery from replication fork stalling at rDNA locus GO:0031297 collapsed replication fork processing GO:0034065 DNA-templated DNA replication maintenance of fidelity