His argument is as follows: the Bible tells us that God "holds everything together"1. If it were not for God, he claims, everything would simply fall apart and the universe would be devoid of any sort of structure - and this includes people. Luckily for us, MGG says, biology provides evidence that this is indeed the case. The cells in our bodies are held together by adhesion molecules. One class of these molecules are laminins (or 'laminin's' as MGG seems to prefer). And, Great Scott, these molecules look like crosses. MGG has a picture and everything! What else could this be but the indelible mark of the Creator? A sound theological argument. Too bad it isnt reality.
MGG's argument falls apart for a variety of reasons. The first, and probably the biggest flaw in his argument is that laminin doesn't actually look like a cross. In his video, MGG states "If you look up laminins in any scientific medical piece of literature, this [the cross shape] is what you will see'. Well, I called MGG's bluff on this one and took a brief perusal through the literature. Here is an image taken from Denzer et al (1998)2:
Look much like a cross to you? Maybe, if it were constructed by a carpenter in a drunken stupor. How about this image from Beck, Hunter and Engel (1990)3:
Nope, still not a cross. I guess the literature does not support MGG's argument as strongly as he thinks. His error is in mistaking diagrams of laminin, like the one he presents, for the molecule's actual physical appearance. Diagrams of any molecular structure are stylistic representations. They are always drawn in a way that makes it easy to understand the basic structure of a molecule - where the domains are in relation to one another, how many peptide chains comprise the molecule and how they are linked together, for instance. They are not meant to be taken as representing precisely what the molecule looks like. There is always some creative liberty taken when designing a diagram. Laminin does not have a rigid cruciform structure. It resembles a cross only vaguely.
This vague cross-like shape shouldn't be in any way surprising to start with. A cross shape is very simple; it's just two lines running perpendicular to one another. Given the number of different types of proteins in the body and the variety of conformations that they can take on, it would be incredible if there weren't any proteins that resembled crosses. It can easily occur naturally and randomly. Imagine tossing toothpicks across a table. Given enough toothpicks, you're bound to find some that fall to form a cross. Would anyone argue that God had a role in this? I guess Divine Toothpicks aren't marketable.
But even if laminin did take on a rigid shape, who is to say that it depicts a cross? It could look like many things. Rotate it 90° and it looks like a dagger. I think you'd be hard pressed to find anyone who would claim this is a molecular representation of a Sikh's kirpan, and therefore Sikhism is the one true religion. The cross argument is equally absurd.
Another reason why MGG's argument is bunk is that it takes for granted the shape of Jesus' execution device as a cross. The shape of the cross has been branded into the public conscience for centuries but there is little historical reason for this. Implements for crucifixion took a variety of shapes. Writing 75 CE, the Roman historian Josephus commented that crucifixion was done in a variety of ways4. Indeed, crucifixion was sometimes done using wooden devices shaped like a T, like a Y or even like an X, as well as using the familiar cross shape. Is there any reason to believe that Jesus was crucified on a cross? Surprisingly, no. The word used in the Bible to describe Jesus' execution implement, in the original Greek, was "σταυρός" (stauros). This is translated as "upright stake" or "wooden post", indicating that he was nailed to a simple, single upright beam (known as a crux simplex). Plutarch and Lucian describe the stauros as having the form of the Greek letter Tau, or T. Neither of these interpretations can be taken as meaning a cross. So if Jesus being crucified on a cross is of dubious nature, so too is the laminin argument. If Jesus actually died on a simple wooden pole, then a cruciform molecule has no significance.
MGG's argument is also problematic theologically. The structure of laminin predates the supposed crucifixion of Christ by many millions of years. Even by Creationist standards, the crucifixion did not occur until thousands of years after Creation. Why would God decide to use a design based on the cross, then? Did he have foreknowledge that Jesus was to be crucified? This would indicate that Jesus was destined to die on the cross for mans' sins. And if Jesus was destined to die on the cross, then mankind was destined to sin. This sort of deterministic implication is at odds with the rest of theology, which claims that God gave man free will and that sin is a choice. MGG's argument implicates the opposite. Which is it, MGG? You can't have it both ways.
In essence, MGG's argument fails. Not only does laminin not resemble a cross, but even if it did, it wouldn't make any sense to interpret it as as sign from a Creator. Creationists, please stop polluting molecular biology with your nonsense. Besides, we all know who really holds us all together.
1. "The Son is the image of the invisible God, the firstborn over all creation. For in him all things were created: things in heaven and on earth, visible and invisible, whether thrones or powers or rulers or authorities; all things have been created through him and for him. He is before all things, and in him all things hold together" Collosians 1:15-17
2. Alain J. Denzer et al. Electron microscopic structure of agrin and mapping of its binding site in laminin-1 . The EMBO Journal (1998) 17, 335–343, doi:10.1093/emboj/17.2.335
3. Konrad Beck, Irene Hunter, and Jürgen Engel . Structure and function of laminin: anatomy of a multidomain glycoprotein . The FASEB Journal . 4(2), 2148-2160
4. Josephus, Wars of The Jews, 5.11.1