It all falls into place...
Ball
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D002857:Chromium / Q000737:chemistry; D004247:DNA / Q000737:chemistry; D004581:Electronics; D006046:Gold / Q000737:chemistry; D006801:Humans; D008904:Miniaturization; D008967:Molecular Biology / Q000639:trends; D012270:Ribosomes / Q000502:physiology; D020058:Styrene / Q000737:chemistry; D013672:Technology
D002857:Chromium; D020058:Styrene; D006046:Gold; D004247:DNA