protoplasts having only 24~28 chromosomes and callus derived Haynaldia villosa potoplasts with 11 14 chromosomes was carried out by a PEG method. A high fr
Pygostyle was previously considered as a unique structure of ornithothoracine birds, used to maneuver tail feathers. A similar structure from an oviraptorosaur
Serration structure on the growth lines of the fossil conchostracans was considered as a key character for the family Afragraptidae. SEM micrographs of some liv
Based on the study about the geological background of Beiya Gold Deposit, numerical simulation was conducted about the three-dimensional structural stress fiel