diff --git a/wiki/pages/engineering.html b/wiki/pages/engineering.html
index e506e108812f7d2f590db9e628293fcecdd53460..5f5f7e2da146d3945d3a2fbf08614f3517c2bba4 100755
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@@ -201,9 +201,9 @@
 				<div class="title2">
 					<div style="font-weight: bold;">Construction</div>
 					<div>1. Obtain the target gene - Tyrosinase</div>
-					<div>2. The target gene was implanted into E.coli DH5α/ PSB1A3-MRFP</div>
+					<div>2. The target gene was implanted into E.coli DH5α/ pSB1A3-MRFP</div>
 					<div>3. The plasmid was extracted, DNA was amplified by PCR, and double digestion and gel recovery experiments were performed</div>
-					<div>4. Competent cells were prepared, and the engineered vector PSB1A3-target fragment was transformed into the expression host E.coli BL21</div>
+					<div>4. Competent cells were prepared, and the engineered vector pSB1A3-target fragment was transformed into the expression host E.coli BL21</div>
 					<div>5. Molecular cloning and screening were performed to obtain positive clones, and the labeled DH5α/pSB1A3 target fragment colonies were selected for colony PCR with Tap enzyme.</div>
 				</div>
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