What is the ruling on drawing cells, tissues, and microorganisms such as viruses and bacteria, whether human, plant, or animal?

There is no objection to drawing parts of the human body other than the head. Indeed, even drawing the head with a part of the body, without including that by which life is sustained, is not covered by the prohibition according to many scholars. Drawing a single limb, such as a hand or a foot, is definitely not included in the prohibition. As for bacteria, their life does not resemble the life of an animal moving by will; rather, it is closer to the life of a growing plant that has no spirit. Therefore, there is no objection to drawing them.