The scientific journal Nature has issued a clarification of a recent report that human embryonic stem cells can be derived without harm to the embryo, but has affirmed the report’s validity.

The scientific journal Nature has issued a clarification of a recent report that human embryonic stem cells can be derived without harm to the embryo, but has affirmed the report’s validity.

The scientific journal Nature has issued a clarification of a recent report that human embryonic stem cells can be derived without harm to the embryo, but has affirmed the report’ s validity.