A new species of Notogalumna from the canopy and another new edaphic species of Galumnopsis (Acari: Oribatida: Galumnoidea) from the tropical rainforest of Los Tuxtlas, Mexico.

The genus Galumnopsis (Galumnellidae) is recorded for the first time from Mexico with a new species described here, and Notogalumna (Galumnidae), represents a second record for the country, also with a new species; both from the tropical rainforest in Veracruz state. Notogalumna rickiglesiasi sp. nov.

Analysis of Stress Indicators During Cryopreservation of Seeds of Landrace Maize (Zea mays).

Background: Maize breeding programs focus on the development of hybrid varieties and the cultivation of landrace materials is discouraged; however, they are a valuable source of genes and their conservation is advisable.

Objective: Analyzing some stress indicators during cryopreservation of maize landrace seeds.

Materials And Methods: Seeds of 35 accessions of landrace maize were collected in two regions of Costa Rica and cryopreserved by direct immersion in liquid nitrogen (LN).

Prevention of endometrial hyperplasia by progesterone during long-term estradiol replacement: influence of bleeding pattern and secretory changes.

Objective: To determine the relative influences of induction of withdrawal bleedings secretory transformation, and reduction of mitosis in glands on prevention of endometrial hyperplasia during long-term hormonal replacement therapy.

Design: Observational expanded clinical case report.

Setting: Reproductive Endocrine Department of Hospital Necker, Paris, France, and Pathology Department of Women's Hospital, Los Angeles County and University of Southern California Medical Center, Los Angeles, California.

Anonymous and non-anonymous oocyte donation preliminary results.

During the past year, we have developed an oocyte donation programme in 10 patients with complete absence of endogenous ovarian function (premature ovarian failure in seven cases, castration in two cases and Turner's syndrome in one case). In cases of anonymous donation, donors were volunteers devoid of any major genetical risk who were included in our IVF programme and who consented to donate one oocyte when at least seven oocytes were recovered, and two oocytes when at least 11 oocytes were recovered, to a recipient couple. As far as possible, morphological characteristics of both couples were paired.

Results of planned in-vitro fertilization programming through the pre-administration of the oestrogen-progesterone combined pill.

The use of an oestrogen-progesterone combined pill permits the induction of ovulation in the absence of any developing follicle. Two treatments were compared. In the first, patients received no prior treatment before stimulation.