Abstract: In a method for preparing an animal model for the human immune system in a non-human mammal, human stem cells with hematopoietic potential are transplanted into a non-human mammal. The non-human mammal is conditioned with cell culture supernatant of a culture of human cell lines, cells and/or tissue. The cell culture supernatant is derived from cell lines producing cytokines and other molecular mediators.

Abstract: In a method for determining specific conditions or changes in the endometrium or in the epithelium of other organs, RNA from a blood sample or tissue sample isolated and the expression or over expression of mRNA of at least one of ?7-hCG, ?6-hCG, and ?6e-hCG is measured quantitatively in the blood or tissue sample. Additionally, total ?hCG mRNA expression or mRNA expression of at least one of ?5-hCG, ?8-hCG, ?3-hCG is quantitatively measured and brought into relation with the expression or over expression of mRNA of at least one of ?7-hCG, ?6-hCG, and ?6e-hCG.