| Only a very small amount of blood or semen is required to identify an individual. |
| That certificate does not contain any specific requirements concerning semen used for fertilisation. |
| I am rather uneasy about the fact that we talk indiscriminately in terms of eggs, semen and embryos. |
| It is therefore preferable that viable semen is present in the sample during ovulation. |
| He argues that this evidence was necessary in order to demonstrate that the semen found on V. P.'s clothing and body was not his. |
| The optimum time for insemination depends on when the ovulation occurs in relation to the heat and for how long the semen is viable. |
