Metaphysical and Moral Status of Cryopreserved Embryos

Embryos, Four-Dimensionalism, and Moral Status

Philosophy journals have been full of discussions of Four-Dimensionalism in recent years. The rich resources of the Four-Dimensional metaphysics have been brought to bear upon many traditional philosophical problems. Alas, the implications of Four-Dimensionalism for bioethics have gone largely unexplored. Hud Hudson (1999, 2001) is the rare exception. Relying upon a Four-Dimensional metaphysics...

The Metaphysical Status of Logic

The purpose of this paper is to examine the status of logic from a metaphysical point of view – what is logic grounded in and what is its relationship with metaphysics. There are three general lines that we can take. 1) Logic and metaphysics are not continuous, neither discipline has no bearing on the other one. This seems to be a rather popular approach, at least implicitly, as philosophers of...

Comparison between Quality of Cryopreserved Embryos Generated from Short and Long Gamete Incubation

Background The purpose was to investigate the effect of the duration of gamete incubation on fertilization rate, embryo cleavage, and embryo quality before and after freezing in mice. MaterialsAndMethods Ovulated oocytes collected from superovulated mice after ip injection of PMSG and hCG were divided randomly into control and experimental groups. Oocytes from the control group were inseminated...

Outcome in children from cryopreserved embryos.

A cohort of 91 children from cryopreserved embryos and 83 control children who were conceived normally had their development assessed using the Griffiths's scales of mental development. The controls (81 singletons and two twins) of a similar age, sex, and social class were selected from siblings, cousins, and peers of the cryopreserved embryo group (68 singleton, 20 twins, and three triplets). ...

Metaphorical imagination: the moral and legal status of fetuses and embryos.