The G.V.P. research lines are focussed on the study of new seminal tests, like Short ORT and Short HOST. About this ones different works have been published:
- A short version of the osmotic resistance test for boar semen. 1998 Pérez Llano, B., Sanchez Sanchez, R., Lorenzo Gonzalez, J.L. y García Casado,P. 15th IPVS Congress, Birmingham, Inglaterra, 5-9 Julio p.61
- Response of the boar sperm to the HOST test and relationship between HOST and ORT results.1998. Pérez Llano, B., García Casado, P., Lorenz Gonzalez, J.L., Sánchez Sánchez, R. 15th IPVS Congress, Birmingham, Inglaterra, 5-9 Julio p.69.
- Nueva técnica de ORT corta para la evaluación de semen de verraco. 1998. Pérez Llano,B., Lorenzo González, J.L., Serra Serra, J.J., Sánchez Sánchez, R. y García Casado, P. Albeitar 21: 6-7.
- SORT and HOST: Fast tests of boar semen. B. Pérez Llano, R. Sánchez Sánchez, J.L. Lorenzo Gonzalez y P. García Casado. Pig International, Febrero 1999, vol.29 nº2, 20C-20D.
- Plasma membrane functionality of boar spermatozoa with abnormal forms. 1999. Pérez-Llano, B., Sánchez-Sánchez, R., Clemente, MJ, García-Casado, P., IV Int.Conf. on Boar Semen Preservation.Agosto 8-11, Beltsville, Maryland, USA.