Studies on RNA in the Metaphase Chromosome of Zea mays by Electron Microscopy in Situ Hybridization Cloning of 18S rRNA Gene From Luffa cylindrical and Its Application as an Internal Standard Nuclear Ribosomal RNA Small Subunit (18S rRNA) Nucleotide Sequencing and Characterization of Sailonggu(Whole Bone of Myospalax baileyi Thomas) Selection and Identification of Oil-producing Energy Microalgae in Northeast Region 18S rRNA gene variation and phylogenetic analysis among 6 orders of Bivalvia class Detection of Two Viruses of Gladiolus hybridus by Multiplex RT-PCR Diet composition of Difflugia tuberspinifera (testate amoeba) based on a clone library technique Sequencing of ribosomal 18S rRNA gene from Panax pseudoginseng var. notoginseng DNA sequencing of 18S rRNA gene of Cuora trifasciata