The battery key card can be used on the panel in the egg testing
chamber , use the key card once to mount the system then click on
the picture of the alien to the right (this will light up the
room). Then look at the egg chamber, you can now get the egg slime
WARNING if you do not take the egg slime right then you will be
killed. Put the battery key card in the slot twice to get the
print out, drag the print out to the face of the character holding
the print out, to read it..

In the lab there is a door that leads to an office. In the office
on the desk you will find a CD-ROM ,
then turn to the door that you came in and on the right side you
can use the panel which will open a secret door. In the secret
room you can use the keypad on the middle chamber and the code is
MYYRMIDON (the chamber will open and an alien will be placed in
your inventory). go out the door on the other side of the room
then turn around and on the ground to the right by the door is a
pass key card for that door. Now go pass the dead alien and out
that door you will be in a chamber with alien eggs look to your
right there are grenades on the self take two of them. Backup then
go to the room in front of you, you should be in a area where the
eggs are in front of you do not backup or you will go up an
elevator, go forward and you should be fighting alien facehuggers.
Use the grenades on them. After that go back to the secret room
there are tubes fill with drugs take one of each. Go to the white
counter and on the left side you will see a vent, open it. After
you open it then turn the valve by the alien facehuggers one will
go in the vent the other is dead, take it.