When an Israeli shell struck Gaza’s largest fertility clinic in December, the explosion blasted the lids off five liquid nitrogen tanks stored in a corner of the embryology unit, Reuters reports.

As the ultra-cold liquid evaporated, the temperature inside the tanks rose, destroying more than 4,000 embryos plus 1,000 more specimens of sperm and unfertilized eggs stored at Gaza City’s Al Basma IVF centre.

The impact of that single explosion was far-reaching — an example of the unseen toll Israel’s six-and-a-half-month-old assault has had on the 2.3 million people of Gaza.

The embryos in those tanks were the last hope for hundreds of Palestinian couples facing infertility.

“We know deeply what these 5,000 lives, or potential lives, meant for the parents, either for the future or for the past,” said Bahaeldeen Ghalayini, 73, the Cambridge-trained obstetrician and gynecologist who established the clinic in 1997.

At least half of the couples those who can no longer produce sperm or eggs to make viable embryos will not have another chance to get pregnant, he said.

“My heart is divided into a million pieces,” he said.

Read full story here.