Yu-Ying Guo

C class F family G genus GM gut microbiota M metabolomics O order P phylum PCA principal co-ordinates analysis R/RL relapsed/refractory diseases S species UDP-N-AG UDP-N-acetylglucosamin 1 Introduction Lymphoma represents a highly heterogeneous malignancy with a pathogenesis that remains incompletely understood.

Providing scientific explanations for natural phenomena is a fundamental aim of science; therefore, scientific explanation has been selected as one of the key practices in science education policy documents around the world. To further elaborate on existing educational frameworks of scientific explanation in K–12, we propose a learning progression of scientific explanation based on the Phenomenon-Theory-Data-Reasoning (PTDR) framework.