Revealing the oocyte's hidden secret.

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MII spindle assessment is moving from research labs into clinical practice. The OSRN is where this transition is being worked out, in the open, by the people doing it.

Our gatherings bring together embryologists and lab directors who use polarized light microscopy in ICSI routine, alongside researchers building the next generation of clinical tools. We discuss workflow, share case experience, and explore how spindle morphology scoring opens new research directions at clinical scale.

If you are an IVF innovator, you belong here.

Past gatherings

26 May 2026

Two decades of spindle morphology research, arriving in clinical practice

Pavlo Mazur and Daniela Nogueira

The inaugural OSRN session. Dozens of IVF experts joined to walk through AI spindle assessment and its implementation in ICSI routine, the workflow, and the research directions that open from here. Live Q&A with embryologists from clinics around the world.

Upcoming gatherings

27 June 202611:00-12:00 Amsterdam time

What an unusual spindle is telling you

Pavlo Mazur

What does an unusual spindle actually mean? Drawing from a dataset of over 2000 oocytes, Pavlo Mazur walks through edge cases embryologists encounter during ICSI - no spindle visible, non-MII spindle, and atypical morphology.

Link to join the video-call → Add to Google Calendar

30 June 202619:00 Amsterdam · 13:00 New York · 10:00 San Francisco

Western Hemisphere Presentation

Pavlo Mazur and Daniela Nogueira

After the first OSRN gathering with embryologists from Europe, Asia, and the Middle East, this second presentation is timed for clinics across the Western Hemisphere. Hosted by Pavlo Mazur and Daniela Nogueira.

Link to join the video-call → Add to Google Calendar

Two ways to join

Observer

Free

OSRN library access

Pilot access to ReSpindle

Practitioner

OSRN library access

Full clinical use of ReSpindle