Analysis of the First and Second Internal Transcribed Spacer Sequences of the Ribosomal DNA in Biomphalaria tenagophila Complex (Mollusca: Planorbidae) Teofânia HDA Vidigal, Linus Spatz, Jessica C Kissinger, Rodrigo AF Redondo, Edina CR Pires, Andrew JG Simpson, Omar S Carvalho PAGE: 153-158

Identification of Biomphalaria havanensis and Biomphalaria obstructa Populations from Cuba Using Polymerase Chain Reaction and Restriction Fragment Length Polymorphism of the Ribosomal RNA Intergenic Spacer Teofânia HDA Vidigal, Roberta L Caldeira, Andrew JG Simpson, Omar S Carvalho PAGE: 661-665

Characterization of Biomphalaria orbignyi, Biomphalaria peregrina and Biomphalaria oligoza by Polymerase Chain Reaction and Restriction Enzyme Digestion of the Internal Transcribed Spacer Region of the RNA Linus Spatz, Teofânia HDA Vidigal, Márcia CA Silva, Stella Maris Gonzalez Cappa,Omar S Carvalho

Identification of Planorbids from Venezuela by Polymerase Chain Reaction Amplification and Restriction Fragment Length Polymorphism of Internal Transcriber Spacer of the RNA Ribosomal Gene Roberta L Caldeira, Teofânia HDA Vidigal, Liboria Matinella,Andrew JG Simpson, Omar S Carvalho PAGE: 171-177

Further Studies on the Molecular Systematics of Biomphalaria Snails from Brazil Teofânia HDA Vidigal, Roberta Lima Caldeira, Andrew JG Simpson,Omar S Carvalho PAGE: 57-66