The Ronald O. Perelman and Claudia Cohen "Center for Reproductive Medicine" - of Weill Cornell Medical College

Embryology Laboratory

Embryology and IVF  

The Embryology Lab's staff is responsible for a range of tasks critical to in vitro fertilization and fertility preservation, including: 

  • Novel embryo culture in reduced-oxygen environment and embryo selection using the EmbryoScope®'s time-lapse technology
  • Evaluation of oocytes (eggs) collected during oocyte retrieval procedures
  • Gamete preparation for fertilization by insemination or intracytoplasmic sperm injection (ICSI)
  • Fertilization evaluation and embryo/blastocyst culture up to day six of development
  • Endometrial coculture
  • Assisted embryo hatching
  • Freezing and storing of oocytes and embryos/blastocysts for fertility preservation

The Embryology Laboratory's staff are experts with decades of experience in in vitro fertilization and assisted reproductive technology. Many of the scientists in the lab hold Ph.D.s or Master's Degrees in Biology and Embryology. 

Embryoscopes

Above: The EmbryoScope® incubation system in CRM's Embryology Laboratory.  


Dr. Nikica ZaninovicNikica Zaninovic, M.S., Ph.D., H.C.L.D., E.L.D.

Director, Embryology Laboratory
Tessler Grandchildren Clinical Scholar 
Associate Professor of Embryology in Clinical Obstetrics and Gynecology 
Associate Professor of Clinical Reproductive Medicine

Nikica Zaninovic, Ph.D., is Embryology Laboratory Director and Associate Professor of Embryology in Clinical Obstetrics & Gynecology and Clinical Reproductive Medicine at the Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine of Weill Cornell Medical College.

In 2012, Dr. Zaninovic’s laboratory became one of the first in the world to initiate clinical use of the pioneering new embryo incubation system, the EmbryoScope®. He and his staff are currently focused on the development of new embryo selection/deselection protocols using data collected by the EmbryoScope®’s time-lapse microscopy of developing embryos.

In addition to his clinical duties, Dr. Zaninovic has ongoing research projects in human embryonic stem cell (hESCs) derivation. As Manager and Principal Investigator of Weill Cornell’s hESC Derivation Laboratory, Dr. Zaninovic has derived 43 stem cell lines. Articles based on this work have appeared in NatureBlood and Fertility and Sterility. In 2013, Dr. Zaninovic registered Weill Cornell Medical College's first human embryonic stem cell line with the National Institutes of Health, making this line available for use by researchers from around the world. At the time of its registration, there were only 210 other registered lines.

Dr. Zaninovic received his Masters and Ph.D. degrees in Biology from the University of Zagreb, Croatia. He is double-certified as a High-complexity Laboratory Director (H.C.L.D.) and Embryology Laboratory Director (E.L.D.) by the American Association of Bioanalysts. In 1990, he was responsible for South America’s first successful intracytoplasmic sperm injection (ICSI) and preimplantation genetic diagnosis (PGD) pregnancies. In 1995, he joined Weill Cornell as a supervisor in the Embryology Laboratory and was subsequently appointed the Lab's Director in 2010. His interests include clinical and experimental embryology as well as stem cell biology.