This study is aimed at establishing the effects of varying sperm quality on IVF-ICSI/IMSI outcomes in unexpected poor ovarian responder subjects POSEIDON groups 1 and 2. In present study, 1,263 couples with female partners who fulfilled group 2 criteria were recruited. All underwent ICSI or IMSI Morula IVF Jakarta Clinic, Indonesia. Patients subsequently classified into six groups, according to...

BACKGROUND: Multiple studies have shown sperm concentration and count decline in many countries, however, authors conclusions were inconsistent. These types of not conducted Russia so far.
 AIM: To evaluate analyze semen parameters among men attending a fertility center St. Petersburg between 2016 2022.
 MATERIALS AND METHODS: In retrospective study 14234 consequent analyses performed...

Azoospermia is defined as the complete absence of spermatozoa upon examination of the semen [including capillary tube centrifugation (CTC), strictly confirmed by the absence of spermatozoa issued in urine after ejaculation]. The presence of rare spermatozoa (<500.000/ml) in seminal fluid after centrifugation is called "cryptozoospermia". The complete absence of spermatozoa should be confirmed w...

Great apes are mammals close to humans in their genetic, behavioral, social and evolutionary characteristics and new genomic information is revolutionizing our understanding of evolution in primates. However, all these species are endangered. While there are many global programs to protect these species, the International Union for Conservation of Nature (IUCN) projects that in a near future th...