Oriental medicine uses many herbs with biological activity. Among these, some have anti-inflammatory activities, but their action mechanisms have yet to be fully elucidated. Therefore, in this study, we harvested mouse bone marrow cells (BMs) and treated them with lipopolysaccharide (LPS), after which they were treated with the extracts of four medicinal herbs. The metabolic activity, cell death ratio, and tumor necrosis factor (TNF)-alpha production of the BMs was then evaluated. Among the four medicinal herbs, Caesalpinia sappan (CS) significantly decreased the metabolic activity, mitochondrial membrane potential of BMs, and production of TNF-alpha, especially in the presence of LPS. Moreover, CS increased the cell death of BMs stained with propidium iodide. Taken together, these findings indicate that CS inhibited the biological activities of LPS-treated BMs in multiple assays, confirming that CS has anti-inflammatory activity.

This study explores the notion of ‘good language teacher’ (GLT) identity in the context of English education in South Korea. While other studies have investigated parents’ and general public preferences for and associations of good language teacher identity with ‘native-speaking’ teachers of English, little research has examined the views of young learners as to what constitutes a GLT. In this study, a survey tool was used to collect student images and descriptions of imagined, good English teachers. A total of 577 young Korean students (K-6th grade) provided their own images and descriptions of good English teachers, both in English and Korean. The findings indicate that student perceptions of GLT identity strongly reflects their immediate learning experience. Contrary to previous studies showing preference for teachers according to ‘native speaker’ or other markers (e.g., race, gender), the study demonstrated no strong preference for native speaking teachers. Instead, factors such as personality were emphasized. This study provides implications for recruiting and hiring practices for English teachers.