The biogenesis, biological functions and modification of Circular RNAs.

Circular RNAs are covalently closed and non-coding in eukaryotes, which have tissue- specific and temporal-specific expression patterns whose biogenesis is regulated by transcription and splicing. Most circular RNAs are localized in the cytoplasm. The sequences and protein-binding elements of circular RNAs facilitate circular RNAs in exerting biological functions through complementary base pairing, regulating protein function or self-translation.

[The criminological characteristics of mental retardation].

Objective: To explore the criminological characteristics of mental retardation (MR) in forensic psychiatry.

Methods: The record scale of forensic psychiatric assessment designed by ourselves was used to analyse the criminological characteristics of 83 offenders with MR, and to compare the criminological characteristics of mild MR with that of moderate and severe MR.

Results: The mild MR accounted for 62.