At high magnification, the germinal center in this reactive lymph node follicle has prominent macrophages with irregular cellular debris (so-called "tingible body macrophages").
The middle oil-member is characterized by medium-sized sandstone and pebbled sandstone, with fair sorting and subangular sphaericity.Rock types mainly were feldspar debris sandstone.
The happening of debris flow is a complicated problem, and it is the outcome of polysynthesism coaction, this brought difficulty to analytical prediction of development trend of debris flow.