Sparkles, forgive me if you already know this... you seem a bit confused, but I'm not entirely sure what you're confused about, so if I'm telling you stuff you already know, just ignore me. ICSI is commonly used in male factor infertility - it's where they catch an individual sperm and inject it into the egg. Blastocyst culture just means they grow the embryos a bit longer - up to day 5 or 6, while some clinics do day 2 or 3. My three snow bubs and my dearly departed Caterpillar are all ICSI'd blastocysts.

I hope that eases the confusion, and if you already knew it, just ignore me.

BW