[It's an eternal concern and preoccupation, to avoid even accidentally drawing Newton's blood in any form because going catatonic is not what anyone would call a desired outcome. So he's careful and avoids scratching Newton, works him open slowly and with gloves, and doesn't apply anything but the lightest suction to the man's skin. He generally compensates for that viscous streak by being rather physically demanding and tugging, pushing, and pulling Newton as he likes.

It's something to work around while they sort out a solution. More pressingly, if Newton were to ever be injured, he may not be able to so much as touch him. But he's not a biologist and regrettably has left that work to Newton amid the man's other dozen projects. He doesn't know anything about poison immunity and only really understands how vaccines work, which sounds similar.

And extremely dangerous. If it wasn't Newton, he wouldn't even be considering it]

Of course. Well I certainly wouldn't want to use Leibling as our test subject. Have you had any progress with your mice?