With few hours remaining before daylight, Dr. Ith Lazarus concludes that perhaps such extensive occult research is premature. The remainder of the evening would be done examining the amputated heart and surrounding arteries/veins for any more medical or scientific data. He returns to the surgical table with the dessicated heart in hand. The eariler observation of the heart's irregular, misshapen, needle-like holes were a point of interest now.
What would cause such small precise holes?
And so the final tests of the night begin. Biopsies of the heart muscle are examined under powerful microscopes with the additional help of heightened senses. Furthermore, a handful of other forensic-style medical procedures were preformed; dye tests, chemical reactivity, and so on. Specifically Lazarus was looking for a medical or scientific answer to the riddle of what caused these holes, or better yet what caused such complex compounds to form -- but at this point any enlightening discovery was welcome.
Spoiler